328664 has 16 divisors (see below), whose sum is σ = 704400. Its totient is φ = 140832.

The previous prime is 328651. The next prime is 328667. The reversal of 328664 is 466823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328667) by changing a digit.

328664 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2879 + ... + 2990.

It is an arithmetic number, because the mean of its divisors is an integer number (44025).

2³²⁸⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

328664 is an abundant number, since it is smaller than the sum of its proper divisors (375736).

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

328664 is a wasteful number, since it uses less digits than its factorization.

328664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5882 (or 5878 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 328664 is about 573.2922465898. The cubic root of 328664 is about 69.0108503556.

The spelling of 328664 in words is "three hundred twenty-eight thousand, six hundred sixty-four".