Properties of the Number 66488

Sixty-Six Thousand Four Hundred Eighty-Eight

Basics

Value: 66487 → 66488 → 66489

Parity: even

Prime: No

Previous Prime: 66467

Next Prime: 66491

Digit Sum: 32

Digital Root: 5

Palindrome: No

Factorization: 2 ³ × 8311

Divisors: 1, 2, 4, 8, 8311, 16622, 33244, 66488

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000001110111000

Octal: 201670

Duodecimal: 32588

Hexadecimal: 103b8

Square: 4420654144

Square Root: 257.85267111278876

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

Numbers k such that 7·10^k + 13 is prime. A274676

Number of integer partitions of the n-th squarefree number using squarefree numbers. A303365

Numbers k whose decimal representation, read as a base-17 value and divided by k, yields an integer. A32565

G.f.: (1+x²+x³)/(1-x-x²-x⁴-x⁵). A188223

Positive numbers whose square starts and ends with exactly 44, and no 444. A348831

Composite numbers k which divide A001045(k-1). A66488

a(n) = ∑_{0<=i<=j<=k<=n} (i+j+k)!/(i!*j!*k!). A307352