680

680 is an even composite number composed of three prime numbers multiplied together.

What does the number 680 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 16 divisors.

680 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of sixteen divisors.

Prime factorization of 680:

23 × 5 × 17

(2 × 2 × 2 × 5 × 17)

See below for interesting mathematical facts about the number 680 from the Numbermatics database.


Names of 680

  • Cardinal: 680 can be written as Six hundred eighty.

Scientific notation

  • Scientific notation: 6.8 × 102

Factors of 680

  • Number of distinct prime factors ω(n): 3
  • Total number of prime factors Ω(n): 5
  • Sum of prime factors: 24

Divisors of 680

  • Number of divisors d(n): 16
  • Complete list of divisors:
  • Sum of all divisors σ(n): 1620
  • Sum of proper divisors (its aliquot sum) s(n): 940
  • 680 is an abundant number, because the sum of its proper divisors (940) is greater than itself. Its abundance is 260

Bases of 680

  • Binary: 10101010002
  • Hexadecimal: 0x2A8
  • Base-36: IW

Squares and roots of 680

  • 680 squared (6802) is 462400
  • 680 cubed (6803) is 314432000
  • The square root of 680 is 26.0768096209
  • The cube root of 680 is 8.7936593441

Scales and comparisons

How big is 680?
  • 680 seconds is equal to 11 minutes, 20 seconds.
  • To count from 1 to 680 would take you about five minutes.

    This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

  • A cube with a volume of 680 cubic inches would be around 0.7 feet tall.

Recreational maths with 680

  • 680 backwards is 086
  • The number of decimal digits it has is: 3
  • The sum of 680's digits is 14
  • More coming soon!

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The information we have on file for 680 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!

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