668947968

Names of 668947968

• Cardinal: 668947968 can be written as Six hundred sixty-eight million, nine hundred forty-seven thousand, nine hundred sixty-eight.

Scientific notation

• Scientific notation: 6.68947968 × 10⁸

Factors of 668947968

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 877

Divisors of 668947968

• Number of divisors d(n): 180
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 16 18 24 26 32 36 39 48 52 64 72 78 96 104 117 128 144 156 169 192 208 234 256 288 312 338 384 416 468 507 512 576 624 676 768 832 859 936 1014 1152 1248 1352 1521 1536 1664 1718 1872 2028 2304 2496 2577 2704 3042 3328 3436 3744 4056 4608 4992 5154 5408 6084 6656 6872 7488 7731 8112 9984 10308 10816 11167 12168 13744 14976 15462 16224 19968 20616 21632 22334 24336 27488 29952 30924 32448 33501 41232 43264 44668 48672 54976 59904 61848 64896 67002 82464 86528 89336 97344 100503 109952 123696 129792 134004 145171 164928 178672 194688 201006 219904 247392 259584 268008 290342 329856 357344 389376 402012 435513 439808 494784 536016 580684 659712 714688 778752 804024 871026 989568 1072032 1161368 1306539 1319424 1429376 1608048 1742052 1979136 2144064 2322736 2613078 2858752 3216096 3484104 3958272 4288128 4645472 5226156 5717504 6432192 6968208 8576256 9290944 10452312 12864384 13936416 17152512 18581888 20904624 25728768 27872832 37163776 41809248 51457536 55745664 74327552 83618496 111491328 167236992 222982656 334473984 668947968
• Sum of all divisors σ(n): 2092996620
• Sum of proper divisors (its aliquot sum) s(n): 1424048652
• 668947968 is an abundant number, because the sum of its proper divisors (1424048652) is greater than itself. Its abundance is 755100684

Bases of 668947968

• Binary: 100111110111110101011000000000₂
• Hexadecimal: 0x27DF5600
• Base-36: B29VK0

Squares and roots of 668947968

• 668947968 squared (668947968²) is 447491383891329024
• 668947968 cubed (668947968³) is 299348451951612483424223232
• The square root of 668947968 is 25864.0284565263
• The cube root of 668947968 is 874.5757804301

Scales and comparisons

• 668,947,968 seconds is equal to 21 years, 14 weeks, 10 hours, 52 minutes, 48 seconds.
• To count from 1 to 668,947,968 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 668947968 cubic inches would be around 72.9 feet tall.

Recreational maths with 668947968

• 668947968 backwards is 869749866
• The number of decimal digits it has is: 9
• The sum of 668947968's digits is 63
• More coming soon!