980,665
980,665 is the digit string of standard gravity: exactly 9.80665 metres per second squared.
- Odd
- Composite
Where 980,665 fits
Why 980,665 is special
It is a convention adopted in 1901, not a measurement of anywhere. Real surface gravity varies by about half a per cent between the equator and the poles and falls with altitude, so the standard value exists to make a weight in kilogram-force mean the same thing in two laboratories.
980,665 is part of
Factors & digit properties
- Divisors (8)
- 1, 5, 7, 35, 28019, 140095, 196133, 980665
- Prime factorisation
- 5 × 7 × 28019
- Digit sum
- 34
- Digital root
- 7
Representations
- Decimal
- 980665
- Scientific notation
- 9.807 × 10^5
Roman numerals
Roman numerals as modelled here goes up to 3,999.
Binary
1 1 1 0 1 1 1 1 0 1 1 0 1 0 1 1 1 0 0 1
1 × 524,288 + 1 × 262,144 + 1 × 131,072 + 0 × 65,536 + 1 × 32,768 + 1 × 16,384 + 1 × 8,192 + 1 × 4,096 + 0 × 2,048 + 1 × 1,024 + 1 × 512 + 0 × 256 + 1 × 128 + 0 × 64 + 1 × 32 + 1 × 16 + 1 × 8 + 0 × 4 + 0 × 2 + 1 × 1 = 980,665
Octal
3 5 7 3 2 7 1
3 × 262,144 + 5 × 32,768 + 7 × 4,096 + 3 × 512 + 2 × 64 + 7 × 8 + 1 × 1 = 980,665
Hexadecimal
e f 6 b 9
e × 65,536 + f × 4,096 + 6 × 256 + b × 16 + 9 × 1 = 980,665
Read as powers of two: 524,288 + 262,144 + 131,072 + 32,768 + 16,384 + 8,192 + 4,096 + 1,024 + 512 + 128 + 32 + 16 + 8 + 1 = 980,665.
In historical numeral systems
Egyptian
9 tadpoles, 8 fingers, 6 coils of rope, 6 hobbles, 5 strokes
9 × 100,000 + 8 × 10,000 + 6 × 100 + 6 × 10 + 5 × 1 = 980,665. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
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
980665 appears in Numbers in physics, the topic covering numbers that carry a documented physics fact.
Numbers Around Us
- appears inPhysics
why?
Strength 0.50, confidence "high".
Science
The digit string of standard gravity, exactly 9.80665 metres per second squared is 980,665 (worldwide, since 1901). A convention rather than a measurement of anywhere. Real surface gravity runs from about 9.76 at the equator to 9.83 at the poles, so the standard exists to make a kilogram-force mean the same thing in two laboratories.
DocumentedScienceGeography: worldwide, since 1901
Common questions
Is 980,665 a prime number?
No, 980,665 is not prime.
What are the factors of 980,665?
The factors of 980,665 are 1, 5, 7, 35, 28019, 140095, 196133, 980665.
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