165655 has 8 divisors (see below), whose sum is σ = 227232. Its totient is φ = 113568.

The previous prime is 165653. The next prime is 165667. The reversal of 165655 is 556561.

165655 = 98² + 99² + ... + 112².

165655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 165655 - 2¹ = 165653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2332 + ... + 2401.

It is an arithmetic number, because the mean of its divisors is an integer number (28404).

2¹⁶⁵⁶⁵⁵ is an apocalyptic number.

165655 is a deficient number, since it is larger than the sum of its proper divisors (61577).

165655 is an equidigital number, since it uses as much as digits as its factorization.

165655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4745.

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

The square root of 165655 is about 407.0073709406. The cubic root of 165655 is about 54.9205464329.

It can be divided in two parts, 1656 and 55, that added together give a triangular number (1711 = T₅₈).

The spelling of 165655 in words is "one hundred sixty-five thousand, six hundred fifty-five".