Properties of the Number 65729

Sixty-Five Thousand Seven Hundred Twenty-Nine

Basics

Value: 65728 → 65729 → 65730

Parity: odd

Prime: Yes

Previous Prime: 65719

Next Prime: 65731

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 65729

Divisors: 1, 65729

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000000011000001

Octal: 200301

Duodecimal: 32055

Hexadecimal: 100c1

Square: 4320301441

Square Root: 256.3766760062233

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

Lesser of twin primes P(k) and P(k+1) such that Sd(P(k)) + Sd(P(k+1)) = Sd(k) + Sd(k+1), where Sd(x) is the sum of digits of x. A277111

Numbers s > 0 such that 8·s² + 64·s + 57 is a square. A387469

Numbers k such that the k-th partition number (A000041(k)) is a semiprime. A65729

Decimal expansion of difference in area between a parabola and a catenary up to the cross-over point (at x=1 with vertex at y=0). A225146