327382721 has 2 divisors, whose sum is σ = 327382722. Its totient is φ = 327382720.

The previous prime is 327382687. The next prime is 327382733. The reversal of 327382721 is 127283723.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 183982096 + 143400625 = 13564^2 + 11975^2 .

It is a cyclic number.

It is not a de Polignac number, because 327382721 - 2¹⁰ = 327381697 is a prime.

It is not a weakly prime, because it can be changed into another prime (327382021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163691360 + 163691361.

It is an arithmetic number, because the mean of its divisors is an integer number (163691361).

Almost surely, 2^327382721 is an apocalyptic number.

It is an amenable number.

327382721 is a deficient number, since it is larger than the sum of its proper divisors (1).

327382721 is an equidigital number, since it uses as much as digits as its factorization.

327382721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 35.

The square root of 327382721 is about 18093.7204852954. The cubic root of 327382721 is about 689.2105519917.

The spelling of 327382721 in words is "three hundred twenty-seven million, three hundred eighty-two thousand, seven hundred twenty-one".