Properties of the Number 77090

Seventy-Seven Thousand Ninety

Basics

Value: 77089 → 77090 → 77091

Parity: even

Prime: No

Previous Prime: 77081

Next Prime: 77093

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 × 5 × 13 × 593

Divisors: 1, 2, 5, 10, 13, 26, 65, 130, 593, 1186

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10010110100100010

Octal: 226442

Duodecimal: 38742

Hexadecimal: 12d22

Square: 5942868100

Square Root: 277.6508598942204

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) = (A278399(n)² + A278400(n)²)/2. A278420

Numbers which are the sum of two squared primes in exactly four ways (ignoring order). A226599

Expansion of ∑_i>=1 μ(i)²*xⁱ/(1 - xⁱ) * ∏_j=1..i 1/(1 - μ(j)²*x^j), where μ() is the Moebius function (A008683). A284835

When iteration of f(x) = φ(σ(x) - φ(x)) is started at initial values listed here it ends up in a cycle of length greater than 1. A77090