326660401 has 8 divisors (see below), whose sum is σ = 330795080. Its totient is φ = 322541568.

The previous prime is 326660393. The next prime is 326660441. The reversal of 326660401 is 104066623.

It can be written as a sum of positive squares in 4 ways, for example, as 175960225 + 150700176 = 13265^2 + 12276^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 326660401 - 2³ = 326660393 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 326660401.

It is not an unprimeable number, because it can be changed into a prime (326660441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40645 + ... + 48013.

It is an arithmetic number, because the mean of its divisors is an integer number (41349385).

Almost surely, 2^326660401 is an apocalyptic number.

It is an amenable number.

326660401 is a deficient number, since it is larger than the sum of its proper divisors (4134679).

326660401 is an equidigital number, since it uses as much as digits as its factorization.

326660401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7923.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 326660401 is about 18073.7489470226. The cubic root of 326660401 is about 688.7032994577.

The spelling of 326660401 in words is "three hundred twenty-six million, six hundred sixty thousand, four hundred one".