328512617 has 4 divisors (see below), whose sum is σ = 332203860. Its totient is φ = 324821376.

The previous prime is 328512601. The next prime is 328512619. The reversal of 328512617 is 716215823.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 716215823 = 61 ⋅11741243.

It can be written as a sum of positive squares in 2 ways, for example, as 116402521 + 212110096 = 10789^2 + 14564^2 .

It is a cyclic number.

It is not a de Polignac number, because 328512617 - 2⁴ = 328512601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328512619) 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, 1845488 + ... + 1845665.

It is an arithmetic number, because the mean of its divisors is an integer number (83050965).

Almost surely, 2^328512617 is an apocalyptic number.

It is an amenable number.

328512617 is a deficient number, since it is larger than the sum of its proper divisors (3691243).

328512617 is an equidigital number, since it uses as much as digits as its factorization.

328512617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3691242.

The product of its digits is 20160, while the sum is 35.

The square root of 328512617 is about 18124.9170204997. The cubic root of 328512617 is about 690.0025323719.

The spelling of 328512617 in words is "three hundred twenty-eight million, five hundred twelve thousand, six hundred seventeen".