Properties of the Number 16649

Sixteen Thousand Six Hundred Forty-Nine

Basics

Value: 16648 → 16649 → 16650

Parity: odd

Prime: Yes

Previous Prime: 16633

Next Prime: 16651

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 16649

Divisors: 1, 16649

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100000100001001

Octal: 40411

Duodecimal: 9775

Hexadecimal: 4109

Square: 277189201

Square Root: 129.0310040261642

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

Initial term in sequence of four consecutive primes separated by 3 consecutive differences each <=6 (i.e., when d=2,4 or 6) and forming d-pattern=[2,6,4]; short d-string notation of pattern = [264]. A78848

T(n,k)=Number of 0..3 arrays of length n+2·k-1 with sum no more than 3·k in any length 2k subsequence (=50% duty cycle). A212471

T(n,k)=Number of length n+3 0..k arrays with no consecutive four elements summing to more than 2·k. A241964

Numbers of the form a⁵ + b⁶, with integers a, b > 0. A303375

Primes p such that A001175(p) = (p-1)/4. A308789

Primes p = prime(k) such that both p+2 and prime(k+6)-2 are prime numbers. A105413

Primes prime(k) such that 2*(prime(k)² - prime(k-1)²) is a perfect square. A335410

Primes of the form 666·k - 1. A63472

Primes of the form a⁵ + b³ with a,b>0. A100273

Numbers n such that p1=2n+3, p2=4n+5, p3=6n+7 and p4=8n+9 are all prime. A105653