Properties of the Number 71668

Seventy-One Thousand Six Hundred Sixty-Eight

Basics

Value: 71667 → 71668 → 71669

Parity: even

Prime: No

Previous Prime: 71663

Next Prime: 71671

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 19 × 23 × 41

Divisors: 1, 2, 4, 19, 23, 38, 41, 46, 76, 82

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001011111110100

Octal: 213764

Duodecimal: 35584

Hexadecimal: 117f4

Square: 5136302224

Square Root: 267.70879701645964

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

Nonnegative values·of solutions (x, y) to the Diophantine equation x²+(x+287)² = y². A205644

Row sums of A095167. A95170

G.f. satisfies A(x) = exp( ∑_k>=1 (A(x^k) + A(i·x^k) + A(-x^k) + A(i³*x^k))/4·x^k/k ), where i = sqrt(-1). A363405

a(n) = A165966(n)/12. A166119

Permutation A057506 applied five times ("⁵"). A71668

Expansion of g.f. A(x) satisfying A(x) = A( x³ + 3·A(x)⁴ )^1/3, with A(0)=0, A'(0)=1. A370441