1655

1,655 is an odd composite number composed of two prime numbers multiplied together.

What does the number 1655 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 4 divisors.

1655 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of four divisors.

Prime factorization of 1655:

5 × 331

See below for interesting mathematical facts about the number 1655 from the Numbermatics database.


Names of 1655

  • Cardinal: 1655 can be written as One thousand, six hundred fifty-five.

Scientific notation

  • Scientific notation: 1.655 × 103

Factors of 1655

  • Number of distinct prime factors ω(n): 2
  • Total number of prime factors Ω(n): 2
  • Sum of prime factors: 336

Divisors of 1655

  • Number of divisors d(n): 4
  • Complete list of divisors:
  • Sum of all divisors σ(n): 1992
  • Sum of proper divisors (its aliquot sum) s(n): 337
  • 1655 is a deficient number, because the sum of its proper divisors (337) is less than itself. Its deficiency is 1318

Bases of 1655

  • Binary: 110011101112
  • Hexadecimal: 0x677
  • Base-36: 19Z

Squares and roots of 1655

  • 1655 squared (16552) is 2739025
  • 1655 cubed (16553) is 4533086375
  • The square root of 1655 is 40.6816912137
  • The cube root of 1655 is 11.8285814861

Scales and comparisons

How big is 1655?
  • 1,655 seconds is equal to 27 minutes, 35 seconds.
  • To count from 1 to 1,655 would take you about twenty-seven 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 1655 cubic inches would be around 1 feet tall.

Recreational maths with 1655

  • 1655 backwards is 5561
  • The number of decimal digits it has is: 4
  • The sum of 1655's digits is 17
  • More coming soon!

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The information we have on file for 1655 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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