654

Names of 654

• Cardinal: 654 can be written as Six hundred fifty-four.

Scientific notation

• Scientific notation: 6.54 × 10²

Factors of 654

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 114

Divisors of 654

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 3 6 109 218 327 654
• Sum of all divisors σ(n): 1320
• Sum of proper divisors (its aliquot sum) s(n): 666
• 654 is an abundant number, because the sum of its proper divisors (666) is greater than itself. Its abundance is 12

Bases of 654

• Binary: 1010001110₂
• Hexadecimal: 0x28E
• Base-36: I6

Squares and roots of 654

• 654 squared (654²) is 427716
• 654 cubed (654³) is 279726264
• The square root of 654 is 25.5734237051
• The cube root of 654 is 8.6801237355

Scales and comparisons

• 654 seconds is equal to 10 minutes, 54 seconds.
• To count from 1 to 654 would take you about five minutes.

  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 654 cubic inches would be around 0.7 feet tall.

Recreational maths with 654

• 654 backwards is 456
• The number of decimal digits it has is: 3
• The sum of 654's digits is 15
• More coming soon!