328706817 has 4 divisors (see below), whose sum is σ = 438275760. Its totient is φ = 219137876.

The previous prime is 328706797. The next prime is 328706827. The reversal of 328706817 is 718607823.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 718607823 = 3 ⋅239535941.

It is a cyclic number.

It is not a de Polignac number, because 328706817 - 2⁶ = 328706753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (328706827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54784467 + ... + 54784472.

It is an arithmetic number, because the mean of its divisors is an integer number (109568940).

Almost surely, 2^328706817 is an apocalyptic number.

It is an amenable number.

328706817 is a deficient number, since it is larger than the sum of its proper divisors (109568943).

328706817 is a wasteful number, since it uses less digits than its factorization.

328706817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109568942.

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 328706817 is about 18130.2734949035. The cubic root of 328706817 is about 690.1384704243.

The spelling of 328706817 in words is "three hundred twenty-eight million, seven hundred six thousand, eight hundred seventeen".