Properties of the Number 71065

Seventy-One Thousand Sixty-Five

Basics

Value: 71064 → 71065 → 71066

Parity: odd

Prime: No

Previous Prime: 71059

Next Prime: 71069

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 5 × 61 × 233

Divisors: 1, 5, 61, 233, 305, 1165, 14213, 71065

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001010110011001

Octal: 212631

Duodecimal: 35161

Hexadecimal: 11599

Square: 5050234225

Square Root: 266.58019431308094

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

Numbers n such that the smallest possible number of multiplications required to compute xⁿ is by 2 less than the number of multiplications obtained by Knuth's power tree method. A115614

Indices of heptagonal numbers (A000566) which are also triangular numbers (A000217). A46193

Indices of heptagonal numbers (A000566) which are also hexagonal. A48902

Number of ways to reciprocally link elements of an 2 X n array either to themselves or to exactly two horizontal, diagonal and antidiagonal neighbors, without consecutive collinear links. A220739

Centered square numbers which are sphenic numbers. A380882

Denominator of (1+σ(s)) / ((s+1)/2), where s is the square of n prime-shifted once (s = A003961(n)² = A003961(n²)). A337339

A permutation of natural numbers: a(1)=2 a(n) is the smallest integer different from a(1), a(2), a(3), ..., a(n-1) such that a(n)+n is prime. A71065