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Properties of the Number 64441

Sixty-Four Thousand Four Hundred Forty-One

Basics

Value: 64440 → 64441 → 64442

Parity: odd

Prime: No

Previous Prime: 64439

Next Prime: 64451

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 13 × 4957

Divisors: 1, 13, 4957, 64441

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1111101110111001

Octal: 175671

Duodecimal: 31361

Hexadecimal: fbb9

Square: 4152642481

Square Root: 253.85231927244627

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+1)X(k+1) 0..6 arrays with every 2X2 subblock having the absolute values of all six edge and diagonal differences no larger than 1. A234131
Numbers k such that -3 is a quadratic residue (not necessarily coprime) modulo k, k + 1, k + 2 and k + 3. A318527
Number of length n word structures with all distinct runs using at most 3 symbols. A351644
Number of identity trees with n nodes where the maximal outdegree (branching factor) equals 7. A245752
Number of (n+1) X (1+1) 0..6 arrays with every 2 X 2 subblock having the absolute values of all six edge and diagonal differences no larger than 1. A234124
Number of (n+1)X(5+1) 0..6 arrays with every 2X2 subblock having the absolute values of all six edge and diagonal differences no larger than 1. A234128
Number of length 3 0..n arrays with each partial sum starting from the beginning no more than two standard deviations from its mean. A244834
Indices of primes in sequence defined by A(0) = 61, A(n) = 10·A(n-1) + 31 for n > 0. A101527
Numbers n such that 6·10n + 4·Rn - 3 is prime, where Rn = 11...1 is the repunit (A002275) of length n. A103034
Increasing partial quotients of e^π - πe (A063504). A64441