328618715 has 4 divisors (see below), whose sum is σ = 394342464. Its totient is φ = 262894968.

The previous prime is 328618679. The next prime is 328618727. The reversal of 328618715 is 517816823.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 517816823 = 19 ⋅27253517.

It is a cyclic number.

It is not a de Polignac number, because 328618715 - 2¹⁰ = 328617691 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32861867 + ... + 32861876.

It is an arithmetic number, because the mean of its divisors is an integer number (98585616).

Almost surely, 2^328618715 is an apocalyptic number.

328618715 is a deficient number, since it is larger than the sum of its proper divisors (65723749).

328618715 is an equidigital number, since it uses as much as digits as its factorization.

328618715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65723748.

The product of its digits is 80640, while the sum is 41.

The square root of 328618715 is about 18127.8436389991. The cubic root of 328618715 is about 690.0768065449.

The spelling of 328618715 in words is "three hundred twenty-eight million, six hundred eighteen thousand, seven hundred fifteen".