327666397 has 2 divisors, whose sum is σ = 327666398. Its totient is φ = 327666396.

The previous prime is 327666377. The next prime is 327666403. The reversal of 327666397 is 793666723.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 290566116 + 37100281 = 17046^2 + 6091^2 .

It is a cyclic number.

It is not a de Polignac number, because 327666397 - 2¹¹ = 327664349 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 327666397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (327666337) 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, 163833198 + 163833199.

It is an arithmetic number, because the mean of its divisors is an integer number (163833199).

Almost surely, 2^327666397 is an apocalyptic number.

It is an amenable number.

327666397 is a deficient number, since it is larger than the sum of its proper divisors (1).

327666397 is an equidigital number, since it uses as much as digits as its factorization.

327666397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1714608, while the sum is 49.

The square root of 327666397 is about 18101.5578611345. The cubic root of 327666397 is about 689.4095607123.

The spelling of 327666397 in words is "three hundred twenty-seven million, six hundred sixty-six thousand, three hundred ninety-seven".