Properties of the Number 63891

Sixty-Three Thousand Eight Hundred Ninety-One

Basics

Value: 63890 → 63891 → 63892

Parity: odd

Prime: No

Previous Prime: 63863

Next Prime: 63901

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 31 × 229

Divisors: 1, 3, 9, 31, 93, 229, 279, 687, 2061, 7099

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111100110010011

Octal: 174623

Duodecimal: 30B83

Hexadecimal: f993

Square: 4082059881

Square Root: 252.7666908435524

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Numbers k such that 5·2^k - 3 is prime. A58588

Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 35 ones. A31803

Numbers k such that nusigma(usigma(k)) = 2k, where usigma(k) is the sum of unitary divisors of k (A034448) and nusigma(k) is the sum of non-unitary divisors of k (A048146). A63891