676
+676 is the international calling code for Tonga.
Where 676 fits
Why 676 is special
Tonga is the only Pacific island nation never colonised, and sits immediately west of the date line, so it is among the first places to see each new day.
676 is part of
Factors & digit properties
- Divisors (9)
- 1, 2, 4, 13, 26, 52, 169, 338, 676
- Prime factorisation
- 2^2 × 13^2
- Digit sum
- 19
- Digital root
- 1
Representations
- Decimal
- 676
- Scientific notation
- 6.760 × 10^2
Roman numerals
D C L X X V I
Binary
1 0 1 0 1 0 0 1 0 0
1 × 512 + 0 × 256 + 1 × 128 + 0 × 64 + 1 × 32 + 0 × 16 + 0 × 8 + 1 × 4 + 0 × 2 + 0 × 1 = 676
Octal
1 2 4 4
1 × 512 + 2 × 64 + 4 × 8 + 4 × 1 = 676
Hexadecimal
2 a 4
2 × 256 + a × 16 + 4 × 1 = 676
Read as powers of two: 512 + 128 + 32 + 4 = 676.
In historical numeral systems
Egyptian
6 coils of rope, 7 hobbles, 6 strokes
6 × 100 + 7 × 10 + 6 × 1 = 676. 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 + 6 vertical wedges (units place)
11 × 60 + 16 = 676. Places are separated by a space on the tablet, with the higher place written first.
Greek (Ionic)
chi, then omicron, then stigma, marked as a numeral
chi-omicron-stigma + keraia
chi + omicron + stigma 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, then vav
tav-resh-ayin-vav
tav (400) + resh (200) + ayin (70) + vav (6) = 676, 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
- Palindromic number
- Deficient number
- Powerful number
Related numbers & connections
Fiji and Tonga are Pacific neighbours. A large share of Fiji's population descends from Indian indentured labourers brought under British rule.
View 679 →Geography
+676 reaches Tonga, which retained its sovereignty throughout the colonial period and is one of the first inhabited places to enter each calendar day.
DocumentedGeographyGeography: Tonga
Common questions
Is 676 a prime number?
No, 676 is not prime.
What are the factors of 676?
The factors of 676 are 1, 2, 4, 13, 26, 52, 169, 338, 676.
What is 676 in Roman numerals?
676 in Roman numerals is DCLXXVI.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 1 reviewer-confirmed record, sourced and reviewed before publication.
Last reviewed: 15 July 2026