2,661 is an odd composite number composed of two prime numbers multiplied together.

What does the number 2661 look like?

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

2661 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 2661:

3 × 887

See below for interesting mathematical facts about the number 2661 from the Numbermatics database.

Names of 2661

  • Cardinal: 2661 can be written as Two thousand, six hundred sixty-one.

Scientific notation

  • Scientific notation: 2.661 × 103

Factors of 2661

  • Number of distinct prime factors ω(n): 2
  • Total number of prime factors Ω(n): 2
  • Sum of prime factors: 890

Divisors of 2661

  • Number of divisors d(n): 4
  • Complete list of divisors:
  • Sum of all divisors σ(n): 3552
  • Sum of proper divisors (its aliquot sum) s(n): 891
  • 2661 is a deficient number, because the sum of its proper divisors (891) is less than itself. Its deficiency is 1770

Bases of 2661

  • Binary: 1010011001012
  • Hexadecimal: 0xA65
  • Base-36: 21X

Squares and roots of 2661

  • 2661 squared (26612) is 7080921
  • 2661 cubed (26613) is 18842330781
  • The square root of 2661 is 51.5848815061
  • The cube root of 2661 is 13.8573959031

Scales and comparisons

How big is 2661?
  • 2,661 seconds is equal to 44 minutes, 21 seconds.
  • To count from 1 to 2,661 would take you about forty-four 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 2661 cubic inches would be around 1.2 feet tall.

Recreational maths with 2661

  • 2661 backwards is 1662
  • The number of decimal digits it has is: 4
  • The sum of 2661's digits is 15
  • More coming soon!

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The information we have on file for 2661 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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