668990790
668,990,790 is an even composite number composed of five prime numbers multiplied together.
668990790 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 668990790:
2 × 32 × 5 × 13 × 833
(2 × 3 × 3 × 5 × 13 × 83 × 83 × 83)See below for interesting mathematical facts about the number 668990790 from the Numbermatics database.
Names of 668990790
- Cardinal: 668990790 can be written as Six hundred sixty-eight million, nine hundred ninety thousand, seven hundred ninety.
Scientific notation
- Scientific notation: 6.6899079 × 108
Factors of 668990790
Divisors of 668990790
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 3 5 6 9 10 13 15 18 26 30 39 45 65 78 83 90 117 130 166 195 234 249 390 415 498 585 747 830 1079 1170 1245 1494 2158 2490 3237 3735 5395 6474 6889 7470 9711 10790 13778 16185 19422 20667 32370 34445 41334 48555 62001 68890 89557 97110 103335 124002 179114 206670 268671 310005 447785 537342 571787 620010 806013 895570 1143574 1343355 1612026 1715361 2686710 2858935 3430722 4030065 5146083 5717870 7433231 8060130 8576805 10292166 14866462 17153610 22299693 25730415 37166155 44599386 51460830 66899079 74332310 111498465 133798158 222996930 334495395 668990790
- Sum of all divisors σ(n): 1896017760
- Sum of proper divisors (its aliquot sum) s(n): 1227026970
- 668990790 is an abundant number, because the sum of its proper divisors (1227026970) is greater than itself. Its abundance is 558036180
Bases of 668990790
- Binary: 1001111101111111111101010001102
- Hexadecimal: 0x27DFFD46
- Base-36: B2ASLI
Squares and roots of 668990790
- 668990790 squared (6689907902) is 447548677104824100
- 668990790 cubed (6689907903) is 299405943059811187470039000
-
The
square root of 668990790 is 25864.8562725563 -
The
cube root of 668990790 is 874.5944417145
Scales and comparisons
How big is 668990790?- 668,990,790 seconds is equal to 21 years, 14 weeks, 22 hours, 46 minutes, 30 seconds.
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To count from 1 to 668,990,790 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 668990790 cubic inches would be around 72.9 feet tall.
Recreational maths with 668990790
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