Properties of the Number 65643

Sixty-Five Thousand Six Hundred Forty-Three

Basics

Value: 65642 → 65643 → 65644

Parity: odd

Prime: No

Previous Prime: 65633

Next Prime: 65647

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 21881

Divisors: 1, 3, 21881, 65643

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000000001101011

Octal: 200153

Duodecimal: 31BA3

Hexadecimal: 1006b

Square: 4309003449

Square Root: 256.2088991428674

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) = round((5ⁿ)*4 / 3ⁿ). A228079

G.f. A(x) satisfies: [xⁿ] A(x)ⁿ⁺¹ = [xⁿ] (1 + x·A(x)^2·n)ⁿ⁺¹ for n >= 0. A360344

Smallest integer value > 1 of the form floor((3/2)^k)/floor((3/2)ⁿ). A65643