328408664 has 8 divisors (see below), whose sum is σ = 615766260. Its totient is φ = 164204328.

The previous prime is 328408649. The next prime is 328408681. The reversal of 328408664 is 466804823.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20525534 + ... + 20525549.

Almost surely, 2^328408664 is an apocalyptic number.

It is an amenable number.

328408664 is a deficient number, since it is larger than the sum of its proper divisors (287357596).

328408664 is a wasteful number, since it uses less digits than its factorization.

328408664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41051089 (or 41051085 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 41.

The square root of 328408664 is about 18122.0491115105. The cubic root of 328408664 is about 689.9297442996.

The spelling of 328408664 in words is "three hundred twenty-eight million, four hundred eight thousand, six hundred sixty-four".