Properties of the Number 68445

Sixty-Eight Thousand Four Hundred Forty-Five

Basics

Value: 68444 → 68445 → 68446

Parity: odd

Prime: No

Previous Prime: 68443

Next Prime: 68447

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ⁴ × 5 × 13 ²

Divisors: 1, 3, 5, 9, 13, 15, 27, 39, 45, 65

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000101101011101

Octal: 205535

Duodecimal: 33739

Hexadecimal: 10b5d

Square: 4684718025

Square Root: 261.6199533674754

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 n such that φ(n) = φ(n+7), with Euler's totient function φ = A000010. A179189

Number of partitions of n such that the number of parts and the greatest part are not coprime. A200792

Number of compositions of n into parts with distinct multiplicities and with exactly nine parts. A321779

Odd numbers k such that A173557(k) divides nonzero A051709(k). A345054

Odd numbers of the form (m·k)²/(m²-k²) for distinct integers m and k. A259288

First component A of the pairs (A, B), listed in increasing order, such that the multiset of digits of A union the multiset of digits of B equals the multiset of digits of A² and the multiset of digits of B², for some B >= A. Note that terms may be repeated. A389379

Number of intersections of at least four edges in a cube of n X n X n smaller cubes. A126562

Palindromic pseudoprimes (base 2). A68445