Properties of the Number -637421

Six Hundred Thirty-Seven Thousand Four Hundred Twenty-One

Basics

Value: -637422 → -637421 → -637420

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 637421

Divisors: 1, 637421

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10011011100111101101

Octal: -2334755

Duodecimal: -268A65

Hexadecimal: -9b9ed

Square: 406305531241

Square Root: 798.3864978818217

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) = n⁴ + n³ + n² + n + 1. A53699

Primes of the form k⁴ + k³ + k² + k + 1. A88548

Primes of the form (k^p-1)/(k-1) not having representation in the form (m^q+1)/(m+1), where k,m > 1 and p,q > 2. A225148

Primes of the form n⁴ + n³ + n² + n + 1 where n is nonprime. A193366

a(n) = (28ⁿ - 1)/27. A218731

a(n) = 1 + σ(n) + σ(n)² + σ(n)³ + σ(n)⁴. A258978

Primes in A258978. A258980

Brazilian primes that are also the lesser of a pair of twin primes. A306849

Primitive prime factors of the cyclotomic polynomial sequence φ(5,k) in the order in which they occur. A256153