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Properties of the Number 68361

Sixty-Eight Thousand Three Hundred Sixty-One

Basics

Value: 68360 → 68361 → 68362

Parity: odd

Prime: No

Previous Prime: 68351

Next Prime: 68371

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 22787

Divisors: 1, 3, 22787, 68361

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000101100001001

Octal: 205411

Duodecimal: 33689

Hexadecimal: 10b09

Square: 4673226321

Square Root: 261.4593658678151

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 nondecreasing arrangements of n numbers in -4..4 with sum zero and sum of squares not greater than n·20/3. A183922
Number of nondecreasing arrangements of n numbers in -4..4 with sum zero and sum of squares less than n·20/3. A183930
Number of nX4 0..1 arrays with every element unequal to 0, 1, 2 or 5 king-move adjacent elements, with upper left element zero. A303957
1's-counting sequence: number of 1's in binary expansion of n (or the binary weight of n). A120
Numbers n such that the number of squarefree numbers between prime(n) and prime(n+1) = prime(n+1)-prime(n)-1. A68361
T(n,k)=Number of nXk 0..1 arrays with every element unequal to 0, 1, 2 or 5 king-move adjacent elements, with upper left element zero. A303961
Numerator of b(n) = -∑k=1..n A037861(k)/((2·k)*(2·k+1)), where A037861(k) = (number of 0's) - (number of 1's) in the binary representation of k. A110625
Denominator of b(n) = -∑k=1..n A037861(k)/((2·k)*(2·k+1)), where A037861(k) = (number of 0's) - (number of 1's) in the binary representation of k. A110626
Denominators in a series for the "alternating Euler constant" log(4/π). A126388
Smallest number that cannot be written as the sum of a prime, a Pell number and n times a Pell number. A281963