328646557 has 8 divisors (see below), whose sum is σ = 333895040. Its totient is φ = 323425440.

The previous prime is 328646503. The next prime is 328646561. The reversal of 328646557 is 755646823.

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

It is a cyclic number.

It is not a de Polignac number, because 328646557 - 2⁷ = 328646429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328646597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18082 + ... + 31372.

It is an arithmetic number, because the mean of its divisors is an integer number (41736880).

Almost surely, 2^328646557 is an apocalyptic number.

It is an amenable number.

328646557 is a deficient number, since it is larger than the sum of its proper divisors (5248483).

328646557 is a wasteful number, since it uses less digits than its factorization.

328646557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13683.

The product of its digits is 1209600, while the sum is 46.

The square root of 328646557 is about 18128.6115574249. The cubic root of 328646557 is about 690.0962947593.

The spelling of 328646557 in words is "three hundred twenty-eight million, six hundred forty-six thousand, five hundred fifty-seven".