327065821 has 2 divisors, whose sum is σ = 327065822. Its totient is φ = 327065820.

The previous prime is 327065803. The next prime is 327065863. The reversal of 327065821 is 128560723.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 260822500 + 66243321 = 16150^2 + 8139^2 .

It is an emirp because it is prime and its reverse (128560723) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 327065821 - 2⁵ = 327065789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (327065021) 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 as a sum of consecutive naturals, namely, 163532910 + 163532911.

It is an arithmetic number, because the mean of its divisors is an integer number (163532911).

Almost surely, 2^327065821 is an apocalyptic number.

It is an amenable number.

327065821 is a deficient number, since it is larger than the sum of its proper divisors (1).

327065821 is an equidigital number, since it uses as much as digits as its factorization.

327065821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 327065821 is about 18084.9611832594. The cubic root of 327065821 is about 688.9880994712.

The spelling of 327065821 in words is "three hundred twenty-seven million, sixty-five thousand, eight hundred twenty-one".