Properties of the Number 68896

Sixty-Eight Thousand Eight Hundred Ninety-Six

Basics

Value: 68895 → 68896 → 68897

Parity: even

Prime: No

Previous Prime: 68891

Next Prime: 68897

Digit Sum: 37

Digital Root: 1

Palindrome: No

Factorization: 2 ⁵ × 2153

Divisors: 1, 2, 4, 8, 16, 32, 2153, 4306, 8612, 17224

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000110100100000

Octal: 206440

Duodecimal: 33A54

Hexadecimal: 10d20

Square: 4746658816

Square Root: 262.4804754643667

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

Infinite sum of the natural numbers, compacted (see comments for an explanation). A336897

Integers k such that the length of decimal expansion of k^k is a repdigit. A330192

Number of n X 5 0..1 arrays with every element unequal to 0, 2, 3, 5 or 6 king-move adjacent elements, with upper left element zero. A304673

Number of active (ON, black) cells at stage 2ⁿ-1 of the two-dimensional cellular automaton defined by "Rule 206", based on the 5-celled von Neumann neighborhood. A270734

T(n,k)=Number of nXk 0..1 arrays with every element unequal to 0, 2, 3, 5 or 6 king-move adjacent elements, with upper left element zero. A304676

Primes containing 2k digits in which the sum of the first k digits is that of the last k digits. A68896

Numbers m such that floor((1+1/m)^k)=k for an integer k>1. A66661