Properties of the Number 16631

Sixteen Thousand Six Hundred Thirty-One

Basics

Value: 16630 → 16631 → 16632

Parity: odd

Prime: Yes

Previous Prime: 16619

Next Prime: 16633

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 16631

Divisors: 1, 16631

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100000011110111

Octal: 40367

Duodecimal: 975B

Hexadecimal: 40f7

Square: 276590161

Square Root: 128.9612344854065

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

Start of a string of exactly 2 consecutive (but disjoint) pairs of twin primes. A35790

Numbers whose least quadratic nonresidue (A020649) is 17. A25026

Smallest of four consecutive primes whose sum is a square. A206280

Primes p for which exactly four bases b with 1 < b < p exist such that p is a base b Wieferich prime. A255207

Primes p with p + 2 and prime(p) - 2 both prime. A236467

a(1) = 2; a(n + 1) = smallest prime > a(n) such that a(n + 1) - a(n) is the product of 7 primes. A285692

Even coefficients in expansion of e.g.f. cos(arcsin(tan(x))). A12079

exp(arcsinh(tanh(x))) = 1+x+1/2!*x²-2/3!*x³-11/4!*x⁴+16/5!*x⁵... A12253

Primes p that have at least four primitive roots that are not primitive roots mod p². A60520

Primes p such that 11 is the largest of all prime factors of the numbers between p and the next prime (cf. A052248). A80187