Properties of the Number 66516

Sixty-Six Thousand Five Hundred Sixteen

Basics

Value: 66515 → 66516 → 66517

Parity: even

Prime: No

Previous Prime: 66509

Next Prime: 66523

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 ² × 3 × 23 × 241

Divisors: 1, 2, 3, 4, 6, 12, 23, 46, 69, 92

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000001111010100

Octal: 201724

Duodecimal: 325B0

Hexadecimal: 103d4

Square: 4424378256

Square Root: 257.90695996812497

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+2)X(k+2) 0..2 arrays with every row, column, diagonal or antidiagonal in each 3X3 subblock summing to a prime. A251819

McKay-Thompson series of class 29A for Monster. A58611

McKay-Thompson series of class 29A for the Monster group with a(0) = 2. A136570

Number of (n+2)X(2+2) 0..2 arrays with every row, column, diagonal or antidiagonal in each 3X3 subblock summing to a prime. A251813

Numbers whose base-3 representation has exactly 11 runs. A43591

Numbers n such that g(σ(n)) = φ(n), where g(n) = prime(n+1) - prime(n). A66516