328605688 has 8 divisors (see below), whose sum is σ = 616135680. Its totient is φ = 164302840.

The previous prime is 328605661. The next prime is 328605689. The reversal of 328605688 is 886506823.

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 (328605689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20537848 + ... + 20537863.

It is an arithmetic number, because the mean of its divisors is an integer number (77016960).

Almost surely, 2^328605688 is an apocalyptic number.

It is an amenable number.

328605688 is a deficient number, since it is larger than the sum of its proper divisors (287529992).

328605688 is a wasteful number, since it uses less digits than its factorization.

328605688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41075717 (or 41075713 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 46.

The square root of 328605688 is about 18127.4843262930. The cubic root of 328605688 is about 690.0676878217.

The spelling of 328605688 in words is "three hundred twenty-eight million, six hundred five thousand, six hundred eighty-eight".