Properties of the Number 6745

Six Thousand Seven Hundred Forty-Five

Basics

Value: 6744 → 6745 → 6746

Parity: odd

Prime: No

Previous Prime: 6737

Next Prime: 6761

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 5 × 19 × 71

Divisors: 1, 5, 19, 71, 95, 355, 1349, 6745

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101001011001

Octal: 15131

Duodecimal: 3AA1

Hexadecimal: 1a59

Square: 45495025

Square Root: 82.12794895770867

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

Coordination sequence for 3D uniform tiling formed by stacking parallel layers of the 4.6.12 2D tiling (cf. A072154). A299258

a(n) is the solution to the postage stamp problem with 4 denominations and n stamps. A1209

Number of ordered triples (a, b, c) with gcd(a, b, c) = 1 and 1 <= {a, b, c} <= n. A71778

a(n) = Fibonacci(n) - n. A65220

Number of ways to place 5 non-attacking wazirs on an n X n toroidal board. A201239

Coefficients in the expansion of C⁴/B⁵, in Watson's notation of page 118. A160528

Lexicographically first sequence of distinct terms such that any set of four successive digits can be reordered as {d, d+1, d+2, d+3}, d being the smallest of the four digits. A302499

Odd composite numbers divisible by the sum of their prime factors (counted with multiplicity). A46347

Perrin sequence of order 5. A87935

Numbers k such that prime(k) divides primorial(j) + 1 for exactly two integers j. A279099