640864

640,864 is an even composite number composed of three prime numbers multiplied together.

What does the number 640864 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 24 divisors.

640864 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twenty-four divisors.

Prime factorization of 640864:

25 × 7 × 2861

(2 × 2 × 2 × 2 × 2 × 7 × 2861)

See below for interesting mathematical facts about the number 640864 from the Numbermatics database.


Names of 640864

  • Cardinal: 640864 can be written as Six hundred forty thousand, eight hundred sixty-four.

Scientific notation

  • Scientific notation: 6.40864 × 105

Factors of 640864

  • Number of distinct prime factors ω(n): 3
  • Total number of prime factors Ω(n): 7
  • Sum of prime factors: 2870

Divisors of 640864

Bases of 640864

  • Binary: 100111000111011000002
  • Hexadecimal: 0x9C760
  • Base-36: DQHS

Squares and roots of 640864

  • 640864 squared (6408642) is 410706666496
  • 640864 cubed (6408643) is 263207117117292544
  • The square root of 640864 is 800.5398178729
  • The cube root of 640864 is 86.2161499879

Scales and comparisons

How big is 640864?
  • 640,864 seconds is equal to 1 week, 10 hours, 1 minute, 4 seconds.
  • To count from 1 to 640,864 would take you about ten 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 640864 cubic inches would be around 7.2 feet tall.

Recreational maths with 640864

  • 640864 backwards is 468046
  • 640864 is a Harshad number.
  • The number of decimal digits it has is: 6
  • The sum of 640864's digits is 28
  • More coming soon!

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"Number 640864 - Facts about the integer". Numbermatics.com. 2024. Web. 3 May 2024.

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Numbermatics. (2024). Number 640864 - Facts about the integer. Retrieved 3 May 2024, from https://numbermatics.com/n/640864/

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The information we have on file for 640864 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!

Keywords: Divisors of 640864, math, Factors of 640864, curriculum, school, college, exams, university, Prime factorization of 640864, STEM, science, technology, engineering, physics, economics, calculator, six hundred forty thousand, eight hundred sixty-four.

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