Properties of the Number 69961

Sixty-Nine Thousand Nine Hundred Sixty-One

Basics

Value: 69960 → 69961 → 69962

Parity: odd

Prime: No

Previous Prime: 69959

Next Prime: 69991

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 43 × 1627

Divisors: 1, 43, 1627, 69961

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001000101001001

Octal: 210511

Duodecimal: 345A1

Hexadecimal: 11149

Square: 4894541521

Square Root: 264.50141776557643

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

a(n) = ceiling(n⁴/4). A131478

Number of (v,w,x,y,z) with all terms in {0,1,...,n} and v=average(w,x,y,z). A212257

Reverse binary expansion of the Fibonacci numbers. A143250

Define C(n) by the recursion C(0) = 4·i where i² = -1, C(n+1) = 1/(1 + C(n)), then a(n) = 4*(-1)ⁿ/Im(C(n)) where Im(z) denotes the imaginary part of z. A69961