640702310768

Names of 640702310768

• Cardinal: 640702310768 can be written as Six hundred forty billion, seven hundred two million, three hundred ten thousand, seven hundred sixty-eight.

Scientific notation

• Scientific notation: 6.40702310768 × 10¹¹

Factors of 640702310768

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 131488

Divisors of 640702310768

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 4 8 13 16 26 52 71 104 142 208 284 331 568 662 923 1136 1324 1846 2648 3692 4303 5296 7384 8606 14768 17212 23501 34424 47002 68848 94004 131071 188008 262142 305513 376016 524284 611026 1048568 1222052 1703923 2097136 2444104 3407846 4888208 6815692 9306041 13631384 18612082 27262768 37224164 43384501 74448328 86769002 120978533 148896656 173538004 241957066 347076008 483914132 563998513 694152016 967828264 1127997026 1935656528 2255994052 3080299571 4511988104 6160599142 9023976208 12321198284 24642396568 40043894423 49284793136 80087788846 160175577692 320351155384 640702310768
• Sum of all divisors σ(n): 1359784968192
• Sum of proper divisors (its aliquot sum) s(n): 719082657424
• 640702310768 is an abundant number, because the sum of its proper divisors (719082657424) is greater than itself. Its abundance is 78380346656

Bases of 640702310768

• Binary: 1001010100101100110101010110100101110000₂
• Hexadecimal: 0x952CD56970
• Base-36: 86C1M2Y8

Squares and roots of 640702310768

• 640702310768 squared (640702310768²) is 410499451023454848749824
• 640702310768 cubed (640702310768³) is 263007946839722964160726172733304832
• The square root of 640702310768 is 800438.8238760037
• The cube root of 640702310768 is 8620.8898633633

Scales and comparisons

• 640,702,310,768 seconds is equal to 20,372 years, 18 weeks, 2 days, 6 minutes, 8 seconds.
• To count from 1 to 640,702,310,768 would take you about forty thousand, seven hundred forty-four 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 640702310768 cubic inches would be around 718.4 feet tall.

Recreational maths with 640702310768

• 640702310768 backwards is 867013207046
• The number of decimal digits it has is: 12
• The sum of 640702310768's digits is 44
• More coming soon!