670
+670 is the international calling code for Timor-Leste.
- Even
- Composite
Where 670 fits
Why 670 is special
Timor-Leste became independent in 2002 after Indonesian occupation, and was the first new sovereign state of the twenty-first century.
Same number, different meanings
How 670 is understood across different contexts — never implying one meaning because of another.
- Mathematics
Timor-Leste became independent in 2002 after Indonesian occupation, and was the first new sovereign state of the twenty-first century.
- Geography
+670 reaches Timor-Leste, which achieved independence in 2002 following a UN-administered transition — the first country to become sovereign in this century.
- Media & popular culture
The Fairchild 670 is a variable-mu stereo compressor containing twenty valves and eleven transformers. Roughly a thousand were built, and surviving units trade at prices comparable to a house.
Factors & digit properties
- Divisors (8)
- 1, 2, 5, 10, 67, 134, 335, 670
- Prime factorisation
- 2 × 5 × 67
- Digit sum
- 13
- Digital root
- 4
Representations
- Decimal
- 670
- Scientific notation
- 6.700 × 10^2
Roman numerals
D C L X X
Binary
1 0 1 0 0 1 1 1 1 0
1 × 512 + 0 × 256 + 1 × 128 + 0 × 64 + 0 × 32 + 1 × 16 + 1 × 8 + 1 × 4 + 1 × 2 + 0 × 1 = 670
Octal
1 2 3 6
1 × 512 + 2 × 64 + 3 × 8 + 6 × 1 = 670
Hexadecimal
2 9 e
2 × 256 + 9 × 16 + e × 1 = 670
Read as powers of two: 512 + 128 + 16 + 8 + 4 + 2 = 670.
In historical numeral systems
Egyptian
6 coils of rope, 7 hobbles
6 × 100 + 7 × 10 = 670. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
1 corner wedge + 1 vertical wedge (sixties place), 1 corner wedge (units place)
11 × 60 + 10 = 670. Places are separated by a space on the tablet, with the higher place written first.
Greek (Ionic)
chi, then omicron, marked as a numeral
chi-omicron + keraia
chi + omicron written in descending order and added — the letters carry their values wherever they stand, so this is addition, not place value.
Hebrew numerals
tav, then resh, then ayin
tav-resh-ayin
tav (400) + resh (200) + ayin (70) = 670, written in descending order.
Systems that simply cannot reach this value are left out. Where a script needs a font most readers do not have, the reading is given instead of the glyphs — see number systems for each system in full.
Other mathematical patterns
- Deficient number
Related numbers & connections
Timor-Leste became independent from Indonesia in 2002, the first new sovereign state of the twenty-first century.
View 62 →Other connections
- is associated with62
why?
Strength 0.50, confidence "high".
Geography
+670 reaches Timor-Leste, which achieved independence in 2002 following a UN-administered transition — the first country to become sovereign in this century.
DocumentedGeographyGeography: Timor-Leste
Media & popular culture
The Fairchild 670 is a variable-mu stereo compressor containing twenty valves and eleven transformers. Roughly a thousand were built, and surviving units trade at prices comparable to a house.
DocumentedMedia & popular cultureGeography: United StatesPeriod: 1959–1965
Common questions
Is 670 a prime number?
No, 670 is not prime.
What are the factors of 670?
The factors of 670 are 1, 2, 5, 10, 67, 134, 335, 670.
What is 670 in Roman numerals?
670 in Roman numerals is DCLXX.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 2 reviewer-confirmed records, sourced and reviewed before publication.
Last reviewed: 15 July 2026