66720

66,720 is an even composite number composed of four prime numbers multiplied together.

What does the number 66720 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 48 divisors.

66720 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of forty-eight divisors.

Prime factorization of 66720:

2⁵ × 3 × 5 × 139

(2 × 2 × 2 × 2 × 2 × 3 × 5 × 139)

See below for interesting mathematical facts about the number 66720 from the Numbermatics database.

Names of 66720

Cardinal: 66720 can be written as Sixty-six thousand, seven hundred twenty.

Scientific notation

Scientific notation: 6.672 × 10⁴

Factors of 66720

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 8
Sum of prime factors: 149

Divisors of 66720

Number of divisors d(n): 48
Complete list of divisors:
1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 80 96 120 139 160 240 278 417 480 556 695 834 1112 1390 1668 2085 2224 2780 3336 4170 4448 5560 6672 8340 11120 13344 16680 22240 33360 66720
Sum of all divisors σ(n): 211680
Sum of proper divisors (its aliquot sum) s(n): 144960
66720 is an abundant number, because the sum of its proper divisors (144960) is greater than itself. Its abundance is 78240

Bases of 66720

Binary: 10000010010100000₂
Hexadecimal: 0x104A0
Base-36: 1FHC

Squares and roots of 66720

66720 squared (66720²) is 4451558400
66720 cubed (66720³) is 297007976448000
The square root of 66720 is 258.3021486555
The cube root of 66720 is 40.5588232253

Scales and comparisons

How big is 66720?

66,720 seconds is equal to 18 hours, 32 minutes.
To count from 1 to 66,720 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 66720 cubic inches would be around 3.4 feet tall.

Recreational maths with 66720

66720 backwards is 02766
The number of decimal digits it has is: 5
The sum of 66720's digits is 21
More coming soon!

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The information we have on file for 66720 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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