328215664 has 40 divisors (see below), whose sum is σ = 742238208. Its totient is φ = 137668800.

The previous prime is 328215661. The next prime is 328215721. The reversal of 328215664 is 466512823.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a nialpdrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328215661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25912 + ... + 36439.

Almost surely, 2^328215664 is an apocalyptic number.

It is an amenable number.

328215664 is an abundant number, since it is smaller than the sum of its proper divisors (414022544).

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

328215664 is a wasteful number, since it uses less digits than its factorization.

328215664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62413 (or 62407 counting only the distinct ones).

The product of its digits is 69120, while the sum is 37.

The square root of 328215664 is about 18116.7233240451. The cubic root of 328215664 is about 689.7945646202.

The spelling of 328215664 in words is "three hundred twenty-eight million, two hundred fifteen thousand, six hundred sixty-four".