Properties of the Number 64400

Sixty-Four Thousand Four Hundred

Basics

Value: 64399 → 64400 → 64401

Parity: even

Prime: No

Previous Prime: 64399

Next Prime: 64403

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 ⁴ × 5 ² × 7 × 23

Divisors: 1, 2, 4, 5, 7, 8, 10, 14, 16, 20

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1111101110010000

Octal: 175620

Duodecimal: 31328

Hexadecimal: fb90

Square: 4147360000

Square Root: 253.7715508089904

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) = φ(11ⁿ-1), where φ is Euler's totient function (A000010). A366685

Number of Fibonacci binary words of length n having no 0110 subword. A Fibonacci binary word is a binary word having no 00 subword. A130137

Number of ordered pairs a,b of elements in the dihedral group D_2n such that the subgroup generated by the pair a,b is the entire group D_2n. A64400

Number of (n+2)X(5+2) 0..2 arrays with every row, column, diagonal or antidiagonal in each 3X3 subblock summing to a prime. A251816

Number of (n+2)X(5+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 2 5 6 or 7. A252216