Properties of the Number 68805

Sixty-Eight Thousand Eight Hundred Five

Basics

Value: 68804 → 68805 → 68806

Parity: odd

Prime: No

Previous Prime: 68791

Next Prime: 68813

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 5 × 11 × 139

Divisors: 1, 3, 5, 9, 11, 15, 33, 45, 55, 99

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000110011000101

Octal: 206305

Duodecimal: 33999

Hexadecimal: 10cc5

Square: 4734128025

Square Root: 262.3070719595642

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 the k-th triangular number contains each of the 10 decimal digits exactly once. A115939

Natural growth of an aliquot sequence driven by a perfect number 2^p-1*((2^p)-1), but starting at 11. A215778

Suppose the integer m has k decimal digits; make a list of the k! strings obtained by permuting the digits in all possible ways; discard any leading zeros; count distinct squares in the list (A062892); a(n) = smallest m that yields n squares. A68805