1668

Names of 1668

• Cardinal: 1668 can be written as One thousand, six hundred sixty-eight.

Scientific notation

• Scientific notation: 1.668 × 10³

Factors of 1668

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 144

Divisors of 1668

• Number of divisors d(n): 12
• Complete list of divisors:
  1 2 3 4 6 12 139 278 417 556 834 1668
• Sum of all divisors σ(n): 3920
• Sum of proper divisors (its aliquot sum) s(n): 2252
• 1668 is an abundant number, because the sum of its proper divisors (2252) is greater than itself. Its abundance is 584

Bases of 1668

• Binary: 11010000100₂
• Hexadecimal: 0x684
• Base-36: 1AC

Squares and roots of 1668

• 1668 squared (1668²) is 2782224
• 1668 cubed (1668³) is 4640749632
• The square root of 1668 is 40.8411557133
• The cube root of 1668 is 11.8594718551

Scales and comparisons

• 1,668 seconds is equal to 27 minutes, 48 seconds.
• To count from 1 to 1,668 would take you about twenty-seven 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 1668 cubic inches would be around 1 feet tall.

Recreational maths with 1668

• 1668 backwards is 8661
• The number of decimal digits it has is: 4
• The sum of 1668's digits is 21
• More coming soon!