Properties of the Number 7668

Seven Thousand Six Hundred Sixty-Eight

Basics

Value: 7667 → 7668 → 7669

Parity: even

Prime: No

Previous Prime: 7649

Next Prime: 7669

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 ² × 3 ³ × 71

Divisors: 1, 2, 3, 4, 6, 9, 12, 18, 27, 36

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1110111110100

Octal: 16764

Duodecimal: 4530

Hexadecimal: 1df4

Square: 58798224

Square Root: 87.56711711595854

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

Numbers k such that 10^k + 3 is prime. A49054

3 times hexagonal numbers: a(n) = 3·n*(2·n-1). A94159

Expansion of ∏_k>=1 (1 - x^k)¹². A735

Number of integer compositions of n that are the first sums of more than one composition. A391628

Numbers n such that σ(n) = 8*φ(n). A104901

a(n) = (9·n² + 5·n + 2)/2. A64225

Number of partitions of n-set in which number of blocks of size 2k is even (or zero) for every k. A102759

Triangle of numbers, called Y(1,2), related to generalized Catalan numbers A062992(n) = C(2;n+1) = A064062(n+1). A115195

10-step Fibonacci sequence starting with 0,0,0,1,0,0,0,0,0,0. A251764

Numbers k such that σ(k) = 2·usigma(k). A63880