327697091 has 2 divisors, whose sum is σ = 327697092. Its totient is φ = 327697090.

The previous prime is 327697079. The next prime is 327697093. The reversal of 327697091 is 190796723.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 327697091 - 2²² = 323502787 is a prime.

It is a super-3 number, since 3×327697091³ (a number of 27 digits) contains 333 as substring.

Together with 327697093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (327697093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163848545 + 163848546.

It is an arithmetic number, because the mean of its divisors is an integer number (163848546).

Almost surely, 2^327697091 is an apocalyptic number.

327697091 is a deficient number, since it is larger than the sum of its proper divisors (1).

327697091 is an equidigital number, since it uses as much as digits as its factorization.

327697091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 142884, while the sum is 44.

The square root of 327697091 is about 18102.4056688607. The cubic root of 327697091 is about 689.4310867487.

The spelling of 327697091 in words is "three hundred twenty-seven million, six hundred ninety-seven thousand, ninety-one".