Properties of the Number 64443

Sixty-Four Thousand Four Hundred Forty-Three

Basics

Value: 64442 → 64443 → 64444

Parity: odd

Prime: No

Previous Prime: 64439

Next Prime: 64451

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 21481

Divisors: 1, 3, 21481, 64443

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1111101110111011

Octal: 175673

Duodecimal: 31363

Hexadecimal: fbbb

Square: 4152900249

Square Root: 253.85625854014316

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

Numbers k such that usigma(k) is a square and sets a new record for such squares. A64443

Indices of primes in sequence defined by A(0) = 63, A(n) = 10·A(n-1) + 13 for n > 0. A101528

Numbers n such that 6·10ⁿ + 4·R_n - 1 is prime, where R_n = 11...1 is the repunit (A002275) of length n. A103035