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Properties of the Number 7605

Seven Thousand Six Hundred Five

Basics

Value: 7604 → 7605 → 7606

Parity: odd

Prime: No

Previous Prime: 7603

Next Prime: 7607

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 2 × 5 × 13 2

Divisors: 1, 3, 5, 9, 13, 15, 39, 45, 65, 117

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1110110110101

Octal: 16665

Duodecimal: 4499

Hexadecimal: 1db5

Square: 57836025

Square Root: 87.20665112249179

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

a(n) = 5·n2. A33429
Numbers m such that there are precisely 13 groups of order m. A292896
Numbers k for which nontrivial positive magic squares of exactly 8 different orders with magic sum k exist. For a definition of nontrivial positive magic squares, see A125005. A125015
Sum of the largest parts of the partitions of n into 10 squarefree parts. A326637
Number of integer compositions of n whose leaders of weakly decreasing runs are strictly decreasing. A374746
Sum of the partition parts of 3n into 3 parts. A235988
G.f.: ∑n>=0 xn * ∏k=1..n (1+xk)/(1-xk). A207641
n is odd and sum of digits of n equals the numbers of divisors of n. A57532
Odd interprimes divisible by 13. A124619
Numbers that are multiple-digit narcissistic numbers in exactly three bases. A256362