Properties of the Number 6651

Six Thousand Six Hundred Fifty-One

Basics

Value: 6650 → 6651 → 6652

Parity: odd

Prime: No

Previous Prime: 6637

Next Prime: 6653

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 739

Divisors: 1, 3, 9, 739, 2217, 6651

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1100111111011

Octal: 14773

Duodecimal: 3A23

Hexadecimal: 19fb

Square: 44235801

Square Root: 81.55366331440912

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

Number of cyclic arrangements of S={1,2,...,n} such that the difference between any two neighbors is at most 3. A242525

3ⁿ with digits rearranged into nonincreasing order. A321539

a(1) = 9; a(n) is smallest number >= a(n-1) such that the juxtaposition a(1)a(2)...a(n) is a prime. A46259

Positive numbers whose product of digits is 10 times their sum. A62043

Sums of distinct powers of 9. A33046

a(n) is the index of the smallest triangular number containing exactly n 2's. A48357

L.g.f.: ∑_n>=1 (xⁿ/n) * ∏_d∣n (1 + d·xⁿ). A205479

Vertex number of a square spiral in which the length of the first two edges are the legs of the primitive Pythagorean triple [21, 20, 29]. The edges of the spiral have length A195033. A195034

Dirichlet g.f.: ∏_k>=2 1 / (1 - k^-s)⁹. A339324

Numbers that are the sum of five third powers in eight or more ways. A345183