Properties of the Number 65609

Sixty-Five Thousand Six Hundred Nine

Basics

Value: 65608 → 65609 → 65610

Parity: odd

Prime: Yes

Previous Prime: 65599

Next Prime: 65617

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 65609

Divisors: 1, 65609

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000000001001001

Octal: 200111

Duodecimal: 31B75

Hexadecimal: 10049

Square: 4304540881

Square Root: 256.14253844295365

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 of the form 3^k + 3^m - 1, where k and m are positive integers. A234346

Primes of the form 10·k² - 1. A143828

Primes of the form m = 9ⁱ + 9^j - 1, where i > j >= 0. A239719

a(n) = ∑_i=1..n ∑_j=1..i (prime(i)² - prime(j)²). A62021

a(n) = 10·3ⁿ - 1. A198645

Primes of the form m = 3ⁱ + 3^j - 1, where i > j >= 0. A239713

a(n) = p(n²*p(n)), where p(x) is the least prime > x. A378137

Primes whose base-8 representation also is the base-3 representation of a prime. A235471

Array A read by upward antidiagonals in which the entry in row n and column k is defined by A(n,k) = (3/2)*(3^k - 1) + A265159(n,k), n,k >= 1. A265161

Primes of the form 2^a * 3^b * 5^c - 1 for positive a, b, c. A293425