328621801 has 4 divisors (see below), whose sum is σ = 333526672. Its totient is φ = 323716932.

The previous prime is 328621789. The next prime is 328621819. The reversal of 328621801 is 108126823.

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.

It is not a de Polignac number, because 328621801 - 2²⁵ = 295067369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328621831) by changing a digit.

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, 2452335 + ... + 2452468.

It is an arithmetic number, because the mean of its divisors is an integer number (83381668).

Almost surely, 2^328621801 is an apocalyptic number.

It is an amenable number.

328621801 is a deficient number, since it is larger than the sum of its proper divisors (4904871).

328621801 is an equidigital number, since it uses as much as digits as its factorization.

328621801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4904870.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 328621801 is about 18127.9287564796. The cubic root of 328621801 is about 690.0789666677.

The spelling of 328621801 in words is "three hundred twenty-eight million, six hundred twenty-one thousand, eight hundred one".