655165 has 8 divisors (see below), whose sum is σ = 898560. Its totient is φ = 449232.

The previous prime is 655157. The next prime is 655181. The reversal of 655165 is 561556.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 655165 - 2³ = 655157 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9325 + ... + 9394.

It is an arithmetic number, because the mean of its divisors is an integer number (112320).

2⁶⁵⁵¹⁶⁵ is an apocalyptic number.

It is an amenable number.

655165 is a deficient number, since it is larger than the sum of its proper divisors (243395).

655165 is a wasteful number, since it uses less digits than its factorization.

655165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18731.

The product of its digits is 4500, while the sum is 28.

The square root of 655165 is about 809.4226337335. The cubic root of 655165 is about 86.8527477815.

It can be divided in two parts, 655 and 165, that added together give a triangular number (820 = T₄₀).

The spelling of 655165 in words is "six hundred fifty-five thousand, one hundred sixty-five".