Properties of the Number 67664

Sixty-Seven Thousand Six Hundred Sixty-Four

Basics

Value: 67663 → 67664 → 67665

Parity: even

Prime: No

Previous Prime: 67651

Next Prime: 67679

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 2 ⁴ × 4229

Divisors: 1, 2, 4, 8, 16, 4229, 8458, 16916, 33832, 67664

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000100001010000

Octal: 204120

Duodecimal: 331A8

Hexadecimal: 10850

Square: 4578416896

Square Root: 260.1230478062257

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

∏_n>=1 (1 + xⁿ)^a(n/n!) = 1 + sin(x). A354171

Inverse permutation to A386932. A387024

Numbers n such that 4·10ⁿ + 7·R_n + 2 is prime, where R_n = 11...1 is the repunit (A002275) of length n. A102996

Triangle, read by rows, where diagonal m of T equals diagonal m-1 of matrix power T^m for m>1: T(n,k) = [T^n-k](n-1,k) for n>=k>0, with T(n,n)=1 and T(n+1,n)=n+1 for n>=0. A132471

Numbers n such that n² + 1 and n² + n + 1 are primes. A67664