Properties of the Number 64180

Sixty-Four Thousand One Hundred Eighty

Basics

Value: 64179 → 64180 → 64181

Parity: even

Prime: No

Previous Prime: 64171

Next Prime: 64187

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 5 × 3209

Divisors: 1, 2, 4, 5, 10, 20, 3209, 6418, 12836, 16045

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111101010110100

Octal: 175264

Duodecimal: 31184

Hexadecimal: fab4

Square: 4119072400

Square Root: 253.33771926027913

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

T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with 2X2 edge jumps all no more than +1 in one of the clockwise or counterclockwise directions but not both. A234769

Number of (n+1)X(2+1) 0..3 arrays with 2X2 edge jumps all no more than +1 in one of the clockwise or counterclockwise directions but not both. A234763

Number of (n+1)X(4+1) 0..3 arrays with 2X2 edge jumps all no more than +1 in one of the clockwise or counterclockwise directions but not both. A234765

Triangle read by rows: T(n,k) is the coefficient A_k in the transformation of 1 + x + x² + ... + xⁿ to the polynomial A_k*(x-3k)^k for 0 <= k <= n. A248978

Number of true-palindromic compositions of n. A338739

Relative of Hofstadter Q-sequence: a(n) = max(0, n+20830) for n <= 0; a(n) = a(n-a(n-1)) + a(n-a(n-2)) + a(n-a(n-3)) for n > 0. A283887

Composite numbers k such that the sum of the proper divisors of k not including 1, (Chowla's function, A048050) and their product (A007956) are both perfect squares. A64180