68165 has 4 divisors (see below), whose sum is σ = 81804. Its totient is φ = 54528.

The previous prime is 68161. The next prime is 68171. The reversal of 68165 is 56186.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36481 + 31684 = 191^2 + 178^2 .

It is a cyclic number.

It is not a de Polignac number, because 68165 - 2² = 68161 is a prime.

It is a Duffinian number.

It is a plaindrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6812 + ... + 6821.

It is an arithmetic number, because the mean of its divisors is an integer number (20451).

2⁶⁸¹⁶⁵ is an apocalyptic number.

It is an amenable number.

68165 is a deficient number, since it is larger than the sum of its proper divisors (13639).

68165 is a wasteful number, since it uses less digits than its factorization.

68165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13638.

The product of its digits is 1440, while the sum is 26.

The square root of 68165 is about 261.0842775810. The cubic root of 68165 is about 40.8495377400.

The spelling of 68165 in words is "sixty-eight thousand, one hundred sixty-five".