The Natural Number 643

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Properties of the Number 643

  • Because 643 is not divisible by 2 ...
    • 643 is an odd number
    • 643 has parity 1
    • 643 is not an even number
  • Because 643 has only 1 and itself as divisors ...
    • 643 is a prime number
    • 643 is not a composite number

Alternative Representations of the Number 643

  • Base 2 (binary): 1010000011
  • Base 8 (octal): 1203
  • Base 16 (hexadecimal): 283
  • Roman numeral: DCXLIII
  • Words: six hundred forty-three

Divisors of the Number 643

  • 643 has 2 positive divisors: 1, 643
    • The sum of the positive divisors is 644
  • 643 has 1 proper divisor: 1
    • The sum of the proper divisors is 1
  • 643 is a deficient number since the sum of the proper divisors is less than 643
  • 643 is not a perfect number
  • 643 is not an abundant number

More Properties of the Number 643

  • 643 is not a square number
  • 643 is not a cube number
  • 643 is not a palindromic number
  • 643 is not a Fibonacci number
  • 643 is not a Lucas number

4:18 am, Wednesday, May 24, 2017 (UTC; +0000)
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