165104 has 20 divisors (see below), whose sum is σ = 339264. Its totient is φ = 77568.

The previous prime is 165103. The next prime is 165133. The reversal of 165104 is 401561.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32 + ... + 575.

2¹⁶⁵¹⁰⁴ is an apocalyptic number.

It is an amenable number.

165104 is an abundant number, since it is smaller than the sum of its proper divisors (174160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165104 is a wasteful number, since it uses less digits than its factorization.

165104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632 (or 626 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 165104 is about 406.3299152167. The cubic root of 165104 is about 54.8595867380.

Adding to 165104 its reverse (401561), we get a palindrome (566665).

The spelling of 165104 in words is "one hundred sixty-five thousand, one hundred four".