328990601 has 4 divisors (see below), whose sum is σ = 337014804. Its totient is φ = 320966400.

The previous prime is 328990483. The next prime is 328990619. The reversal of 328990601 is 106099823.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21864976 + 307125625 = 4676^2 + 17525^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-328990601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328990691) 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 3 ways as a sum of consecutive naturals, for example, 4012040 + ... + 4012121.

It is an arithmetic number, because the mean of its divisors is an integer number (84253701).

Almost surely, 2^328990601 is an apocalyptic number.

It is an amenable number.

328990601 is a deficient number, since it is larger than the sum of its proper divisors (8024203).

328990601 is an equidigital number, since it uses as much as digits as its factorization.

328990601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8024202.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 328990601 is about 18138.0980535446. The cubic root of 328990601 is about 690.3370201259.

The spelling of 328990601 in words is "three hundred twenty-eight million, nine hundred ninety thousand, six hundred one".