328103665 has 4 divisors (see below), whose sum is σ = 393724404. Its totient is φ = 262482928.

The previous prime is 328103653. The next prime is 328103681. The reversal of 328103665 is 566301823.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 566301823 = 313 ⋅1809271.

It can be written as a sum of positive squares in 2 ways, for example, as 98247744 + 229855921 = 9912^2 + 15161^2 .

It is a cyclic number.

It is not a de Polignac number, because 328103665 - 2¹⁹ = 327579377 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 328103665.

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, 32810362 + ... + 32810371.

It is an arithmetic number, because the mean of its divisors is an integer number (98431101).

Almost surely, 2^328103665 is an apocalyptic number.

It is an amenable number.

328103665 is a deficient number, since it is larger than the sum of its proper divisors (65620739).

328103665 is an equidigital number, since it uses as much as digits as its factorization.

328103665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65620738.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 328103665 is about 18113.6320212154. The cubic root of 328103665 is about 689.7160947815.

The spelling of 328103665 in words is "three hundred twenty-eight million, one hundred three thousand, six hundred sixty-five".