165715 has 16 divisors (see below), whose sum is σ = 228096. Its totient is φ = 114400.

The previous prime is 165713. The next prime is 165719. The reversal of 165715 is 517561.

165715 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 165715 - 2¹ = 165713 is a prime.

It is a super-2 number, since 2×165715² = 54922922450, which contains 22 as substring.

165715 is a lucky number.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 165715.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1200 + ... + 1330.

It is an arithmetic number, because the mean of its divisors is an integer number (14256).

2¹⁶⁵⁷¹⁵ is an apocalyptic number.

165715 is a deficient number, since it is larger than the sum of its proper divisors (62381).

165715 is a wasteful number, since it uses less digits than its factorization.

165715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170.

The product of its digits is 1050, while the sum is 25.

The square root of 165715 is about 407.0810730063. The cubic root of 165715 is about 54.9271763465.

The spelling of 165715 in words is "one hundred sixty-five thousand, seven hundred fifteen".