664640

664,640 is an even composite number composed of four prime numbers multiplied together.

What does the number 664640 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 56 divisors.

664640 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of fifty-six divisors.

Prime factorization of 664640:

2⁶ × 5 × 31 × 67

(2 × 2 × 2 × 2 × 2 × 2 × 5 × 31 × 67)

See below for interesting mathematical facts about the number 664640 from the Numbermatics database.

Names of 664640

Cardinal: 664640 can be written as Six hundred sixty-four thousand, six hundred forty.

Scientific notation

Scientific notation: 6.6464 × 10⁵

Factors of 664640

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 9
Sum of prime factors: 105

Divisors of 664640

Number of divisors d(n): 56
Complete list of divisors:
1 2 4 5 8 10 16 20 31 32 40 62 64 67 80 124 134 155 160 248 268 310 320 335 496 536 620 670 992 1072 1240 1340 1984 2077 2144 2480 2680 4154 4288 4960 5360 8308 9920 10385 10720 16616 20770 21440 33232 41540 66464 83080 132928 166160 332320 664640
Sum of all divisors σ(n): 1658112
Sum of proper divisors (its aliquot sum) s(n): 993472
664640 is an abundant number, because the sum of its proper divisors (993472) is greater than itself. Its abundance is 328832

Bases of 664640

Binary: 10100010010001000000₂
Hexadecimal: 0xA2440
Base-36: E8U8

Squares and roots of 664640

664640 squared (664640²) is 441746329600
664640 cubed (664640³) is 293602280505344000
The square root of 664640 is 815.2545614715
The cube root of 664640 is 87.2694337981

Scales and comparisons

How big is 664640?

664,640 seconds is equal to 1 week, 16 hours, 37 minutes, 20 seconds.
To count from 1 to 664,640 would take you about sixteen 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 664640 cubic inches would be around 7.3 feet tall.

Recreational maths with 664640

664640 backwards is 046466
The number of decimal digits it has is: 6
The sum of 664640's digits is 26
More coming soon!

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The information we have on file for 664640 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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