328645866 has 8 divisors (see below), whose sum is σ = 657291744. Its totient is φ = 109548620.

The previous prime is 328645859. The next prime is 328645897. The reversal of 328645866 is 668546823.

It is a sphenic number, since it is the product of 3 distinct primes.

328645866 is an admirable number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 27387150 + ... + 27387161.

It is an arithmetic number, because the mean of its divisors is an integer number (82161468).

Almost surely, 2^328645866 is an apocalyptic number.

328645866 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

328645866 is a wasteful number, since it uses less digits than its factorization.

328645866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54774316.

The product of its digits is 1658880, while the sum is 48.

The square root of 328645866 is about 18128.5924991434. The cubic root of 328645866 is about 690.0958111020.

The spelling of 328645866 in words is "three hundred twenty-eight million, six hundred forty-five thousand, eight hundred sixty-six".