664742820
664,742,820 is an even composite number composed of five prime numbers multiplied together.
What does the number 664742820 look like?
This visualization shows the relationship between its 5 prime factors (large circles) and 72 divisors.
664742820 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 664742820:
22 × 3 × 5 × 72 × 226103
(2 × 2 × 3 × 5 × 7 × 7 × 226103)See below for interesting mathematical facts about the number 664742820 from the Numbermatics database.
Names of 664742820
- Cardinal: 664742820 can be written as Six hundred sixty-four million, seven hundred forty-two thousand, eight hundred twenty.
Scientific notation
- Scientific notation: 6.6474282 × 108
Factors of 664742820
Divisors of 664742820
- Number of divisors d(n): 72
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Complete list of divisors:
1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 49 60 70 84 98 105 140 147 196 210 245 294 420 490 588 735 980 1470 2940 226103 452206 678309 904412 1130515 1356618 1582721 2261030 2713236 3165442 3391545 4522060 4748163 6330884 6783090 7913605 9496326 11079047 13566180 15827210 18992652 22158094 23740815 31654420 33237141 44316188 47481630 55395235 66474282 94963260 110790470 132948564 166185705 221580940 332371410 664742820
- Sum of all divisors σ(n): 2165171904
- Sum of proper divisors (its aliquot sum) s(n): 1500429084
- 664742820 is an abundant number, because the sum of its proper divisors (1500429084) is greater than itself. Its abundance is 835686264
Bases of 664742820
- Binary: 1001111001111100101011101001002
- Hexadecimal: 0x279F2BA4
- Base-36: AZRQUC
Squares and roots of 664742820
- 664742820 squared (6647428202) is 441883016741552400
- 664742820 cubed (6647428203) is 293738562658886753553768000
-
The
square root of 664742820 is 25782.6069279273 -
The
cube root of 664742820 is 872.7393376843
Scales and comparisons
How big is 664742820?- 664,742,820 seconds is equal to 21 years, 7 weeks, 18 hours, 47 minutes.
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To count from 1 to 664,742,820 would take you about thirty-one years!
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 664742820 cubic inches would be around 72.7 feet tall.
Recreational maths with 664742820
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