Properties of the Number -665279

Six Hundred Sixty-Five Thousand Two Hundred Seventy-Nine

Basics

Value: -665280 → -665279 → -665278

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 35

Digital Root: 8

Palindrome: No

Factorization: 665279

Divisors: 1, 665279

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10100010011010111111

Octal: -2423277

Duodecimal: -280BBB

Hexadecimal: -a26bf

Square: 442596147841

Square Root: 815.64636945186

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 p such that p+1 is a highly composite number. A72828

a(n)= numerator of ((n + 3)! - (n - 3)!)/(n!). A127227

Primes which produce records in A157188, at index i=π(a(n)) (π=A000720). A157190

Primes p for which σ(p+1)/σ(p) reaches a record value, where σ(k) is the divisor sum function (A000203). A326393

a(n) is the smallest prime such that exactly n prime pairs (p,q) exist with a(n) = p·q + p + q. A198277

Numbers k where records occur for d(k+1)/d(k), where d(k) is A000005(k). A282531

Numbers k where records occur for σ(k+1)/σ(k), where σ(k) is the sum of divisors of k (A000203). A335067

The least number having n representations as p·q - p - q for primes p <= q. A218862

Primes of the form (2·n)!/n!-1. A112854

Primes p such that 2·p + 1 is also prime and p + 1 is a highly composite number (definition 1). A214873