164504 has 8 divisors (see below), whose sum is σ = 308460. Its totient is φ = 82248.

The previous prime is 164503. The next prime is 164513. The reversal of 164504 is 405461.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10274 + ... + 10289.

2¹⁶⁴⁵⁰⁴ is an apocalyptic number.

It is an amenable number.

164504 is a deficient number, since it is larger than the sum of its proper divisors (143956).

164504 is a wasteful number, since it uses less digits than its factorization.

164504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20569 (or 20565 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 164504 is about 405.5909269202. The cubic root of 164504 is about 54.7930514926.

Adding to 164504 its reverse (405461), we get a palindrome (569965).

The spelling of 164504 in words is "one hundred sixty-four thousand, five hundred four".