Properties of the Number 68961

Sixty-Eight Thousand Nine Hundred Sixty-One

Basics

Value: 68960 → 68961 → 68962

Parity: odd

Prime: No

Previous Prime: 68947

Next Prime: 68963

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 3 × 127 × 181

Divisors: 1, 3, 127, 181, 381, 543, 22987, 68961

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000110101100001

Octal: 206541

Duodecimal: 33AA9

Hexadecimal: 10d61

Square: 4755619521

Square Root: 262.60426500725384

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) = ∑_k=1..n gcd(k, n)³. A343497

Sqrt(σ(A008847(n)²)), where A008847 lists m such that σ(m²) is a square. A163763

Numbers whose binary and maximal Lucas representations are both palindromic. A351718

Triangular matrix T, read by rows, that satisfies T² = A105615³; also equals the matrix cube of triangle A105623. A105626

a(n) = floor( a(n-1)/a(1) + a(n-3)/a(3) + a(n-5)/a(5) + ... ), for n >= 3 with a(1) = 1 and a(2) = 3. A22877

Powers of 2 with exactly two 2's in their decimal digits. A68961