Properties of the Number 64493

Sixty-Four Thousand Four Hundred Ninety-Three

Basics

Value: 64492 → 64493 → 64494

Parity: odd

Prime: No

Previous Prime: 64489

Next Prime: 64499

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 11 ² × 13 × 41

Divisors: 1, 11, 13, 41, 121, 143, 451, 533, 1573, 4961

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111101111101101

Octal: 175755

Duodecimal: 313A5

Hexadecimal: fbed

Square: 4159347049

Square Root: 253.95472037353431

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

Engel expansion of π²/6, or ζ(2) = 1.64493. A59186

Maximal number of regions obtained by a straight line drawing of the complete bipartite graph K_n,n. A117717

Numbers k such that k*(k+5) is a palindrome. A28558

Number of (n+1) X (3+1) 0..2 arrays with every 2 X 2 subblock summing to 4 and no 2 X 2 subblock having exactly two nonzero entries. A251144

Number of length 1+4 0..n arrays with every five consecutive terms having the maximum of some two terms equal to the minimum of the remaining three terms. A254699

T(n,k) = Number of (n+1) X (k+1) 0..2 arrays with every 2 X 2 subblock summing to 4 and no 2 X 2 subblock having exactly two nonzero entries. A251149

Decimal expansion of the asymptotic median of the abundancy indices of the positive integers. A353617

List of distinct greatest common divisors of { k! and k! - (k-1)! + (k-2)! - ... + (-1)^k*0!, k = 0 .. n}. A64493