66421

66,421 is an odd composite number composed of two prime numbers multiplied together.

What does the number 66421 look like?

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

66421 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 66421:

127 × 523

See below for interesting mathematical facts about the number 66421 from the Numbermatics database.


Names of 66421

  • Cardinal: 66421 can be written as Sixty-six thousand, four hundred twenty-one.

Scientific notation

  • Scientific notation: 6.6421 × 104

Factors of 66421

  • Number of distinct prime factors ω(n): 2
  • Total number of prime factors Ω(n): 2
  • Sum of prime factors: 650

Divisors of 66421

  • Number of divisors d(n): 4
  • Complete list of divisors:
  • Sum of all divisors σ(n): 67072
  • Sum of proper divisors (its aliquot sum) s(n): 651
  • 66421 is a deficient number, because the sum of its proper divisors (651) is less than itself. Its deficiency is 65770

Bases of 66421

  • Binary: 100000011011101012
  • Hexadecimal: 0x10375
  • Base-36: 1F91

Squares and roots of 66421

  • 66421 squared (664212) is 4411749241
  • 66421 cubed (664213) is 293032796336461
  • The square root of 66421 is 257.7227192159
  • The cube root of 66421 is 40.4981455229

Scales and comparisons

How big is 66421?
  • 66,421 seconds is equal to 18 hours, 27 minutes, 1 second.
  • To count from 1 to 66,421 would take you about eighteen hours.

    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 66421 cubic inches would be around 3.4 feet tall.

Recreational maths with 66421

  • 66421 backwards is 12466
  • The number of decimal digits it has is: 5
  • The sum of 66421's digits is 19
  • More coming soon!

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The information we have on file for 66421 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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