Properties of the Number 64516

Sixty-Four Thousand Five Hundred Sixteen

Basics

Value: 64515 → 64516 → 64517

Parity: even

Prime: No

Previous Prime: 64513

Next Prime: 64553

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ² × 127 ²

Divisors: 1, 2, 4, 127, 254, 508, 16129, 32258, 64516

Polygonal

Triangular: No

Square: Yes

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1111110000000100

Octal: 176004

Duodecimal: 31404

Hexadecimal: fc04

Square: 4162314256

Square Root: 254

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) and floor(a(n)/7) are both squares; i.e., squares which remain squares when written in base 7 and last digit is removed. A55859

Squares with initial digit '6'. A45789

a(n) = (11·n+1)². A17402

Number of compositions of n whose set of distinct parts is pairwise coprime, where a singleton is always considered coprime. A337664

Triangular numbers + 1 squared. A86601

a(n) = (8·n+6)². A17138

a(n) = 4·prime(n)². A69262

a(n) = [xⁿ] ∏_k>=1 ((1 + x^k)/(1 + x^n·k))ⁿ. A304626

Perfect powers k such that A052409(k) is equal to A052409(A366275(k)). A366278

Split A377091 into sublists consisting of runs of terms with the same sign. Sequence gives k's such that A377091(k) is the first term of those sublists whose terms (in absolute value) form an arithmetic progression with common difference -1. A380504