Properties of the Number 64591

Sixty-Four Thousand Five Hundred Ninety-One

Basics

Value: 64590 → 64591 → 64592

Parity: odd

Prime: Yes

Previous Prime: 64579

Next Prime: 64601

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 64591

Divisors: 1, 64591

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1111110001001111

Octal: 176117

Duodecimal: 31467

Hexadecimal: fc4f

Square: 4171997281

Square Root: 254.14759491287734

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

Primes that are congruent to 1 mod n, where n is the index of the prime. A48891

Primes p = prime(k) such that the decimal representation of p contains k as a substring. A75902

Primes p such that π(p) is obtained by dropping one of the digits of p in decimal expansion. A114924

Primes p such that π(p) divides p-1 and/or p+1, where π(p) is the number of primes <= p. A162567

Primes p such that q = 2·p³-1 and 2·p*q²-1 are both prime. A224614

Primes p such that there exists at least one number j and π(p)= d₁ d₂ ... d_j*d_j+1 d_j+2 ... d_k where d₁ d₂ ...d_k is the decimal expansion of p. A112013

a(n) = the least prime p such that (2·k + 1)*p - 2·k, k=1..n are all prime. A175566

Number of point labeled 5,6-free two-graphs with n nodes. A7832

Primes associated with the indices in A362060. A362066

Numbers n such that n = π(n)*k + 1 for some k. A65136