327633821 has 2 divisors, whose sum is σ = 327633822. Its totient is φ = 327633820.

The previous prime is 327633797. The next prime is 327633857. The reversal of 327633821 is 128336723.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 282609721 + 45024100 = 16811^2 + 6710^2 .

It is a cyclic number.

It is not a de Polignac number, because 327633821 - 2¹⁰ = 327632797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (327633221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163816910 + 163816911.

It is an arithmetic number, because the mean of its divisors is an integer number (163816911).

Almost surely, 2^327633821 is an apocalyptic number.

It is an amenable number.

327633821 is a deficient number, since it is larger than the sum of its proper divisors (1).

327633821 is an equidigital number, since it uses as much as digits as its factorization.

327633821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 35.

The square root of 327633821 is about 18100.6580267127. The cubic root of 327633821 is about 689.3867133384.

The spelling of 327633821 in words is "three hundred twenty-seven million, six hundred thirty-three thousand, eight hundred twenty-one".