Properties of the Number 78664

Seventy-Eight Thousand Six Hundred Sixty-Four

Basics

Value: 78663 → 78664 → 78665

Parity: even

Prime: No

Previous Prime: 78653

Next Prime: 78691

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 2 ³ × 9833

Divisors: 1, 2, 4, 8, 9833, 19666, 39332, 78664

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011001101001000

Octal: 231510

Duodecimal: 39634

Hexadecimal: 13348

Square: 6188024896

Square Root: 280.471032372329

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

a(n+1) = ∑_k=0..n (n!/k!)*binomial(n,k)*a(k). A110083

Triangle, read by rows, where T(n,k) = T(n,k-1) + n·T(n-1,k-1) for n>0 and k>0, with T(n,0) = T(n-1,n-1) for n>0 and T(0,0) = 1. A132007

Number of 2 X 2 nonsingular 0..n matrices with rows in increasing order. A183761

Number of divisors of the n-th Ulam number. A78664