Properties of the Number 68643

Sixty-Eight Thousand Six Hundred Forty-Three

Basics

Value: 68642 → 68643 → 68644

Parity: odd

Prime: No

Previous Prime: 68639

Next Prime: 68659

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 29 × 263

Divisors: 1, 3, 9, 29, 87, 261, 263, 789, 2367, 7627

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000110000100011

Octal: 206043

Duodecimal: 33883

Hexadecimal: 10c23

Square: 4711861449

Square Root: 261.99809159610305

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

Number of intersection points of all lines through pairs of vertices of a regular n-gon. A146212

a(n) = (2·n+1)*(n³-2·n²+n+1). A347319

Numbers m such that abs(K(m+1) - K(m)) = 1, where K(m) = A002034(m) is the Kempner function. A346211

Largest n-digit palindromic triangular number, or 0 if no such number exists. A68643

Number of nX4 0..1 arrays with every element unequal to 1, 2, 3 or 5 king-move adjacent elements, with upper left element zero. A304015