328704664 has 8 divisors (see below), whose sum is σ = 616321260. Its totient is φ = 164352328.

The previous prime is 328704643. The next prime is 328704703. The reversal of 328704664 is 466407823.

It is a happy number.

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

It is a super-3 number, since 3×328704664³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 20544034 + ... + 20544049.

Almost surely, 2^328704664 is an apocalyptic number.

It is an amenable number.

328704664 is a deficient number, since it is larger than the sum of its proper divisors (287616596).

328704664 is a wasteful number, since it uses less digits than its factorization.

328704664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41088089 (or 41088085 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 40.

The square root of 328704664 is about 18130.2141189783. The cubic root of 328704664 is about 690.1369636394.

The spelling of 328704664 in words is "three hundred twenty-eight million, seven hundred four thousand, six hundred sixty-four".