Properties of the Number 61564

Sixty-One Thousand Five Hundred Sixty-Four

Basics

Value: 61563 → 61564 → 61565

Parity: even

Prime: No

Previous Prime: 61561

Next Prime: 61583

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ² × 15391

Divisors: 1, 2, 4, 15391, 30782, 61564

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1111000001111100

Octal: 170174

Duodecimal: 2B764

Hexadecimal: f07c

Square: 3790126096

Square Root: 248.12093825390875

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

Number of (6+2)X(n+2) 0..4 arrays with every consecutive three elements in every row and diagonal having exactly two distinct values, and in every column and antidiagonal not having exactly two distinct values, and new values 0 upwards introduced in row major order. A252967

T(n,k)=Number of (n+2)X(k+2) 0..4 arrays with every consecutive three elements in every row and diagonal having exactly two distinct values, and in every column and antidiagonal not having exactly two distinct values, and new values 0 upwards introduced in row major order. A252961

Numbers k such that the repeating part of the decimal expansion of 1/k (omitting leading or trailing zeros) forms a prime number. A61564