Properties of the Number 64406

Sixty-Four Thousand Four Hundred Six

Basics

Value: 64405 → 64406 → 64407

Parity: even

Prime: No

Previous Prime: 64403

Next Prime: 64433

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 32203

Divisors: 1, 2, 32203, 64406

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111101110010110

Octal: 175626

Duodecimal: 31332

Hexadecimal: fb96

Square: 4148132836

Square Root: 253.7833721897477

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) = ∑_d∣n (n/d)^n-n/d * binomial(d+n-1,n). A363664

Antidiagonal sums of A163280. A163983

Number of 6Xn 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 2 neighboring 1s. A297303

a(n) is the least k such that A033273(k) is equal to (A033273(n·k + 1) - 1)/n where A033273(n) is the number of nonprime divisors of n. A352256

T(n,k)=Number of nXk 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 2 neighboring 1s. A297299

Partial sums of A064405. A64406