327891671 has 2 divisors, whose sum is σ = 327891672. Its totient is φ = 327891670.

The previous prime is 327891667. The next prime is 327891673. The reversal of 327891671 is 176198723.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 327891671 - 2² = 327891667 is a prime.

It is a super-2 number, since 2×327891671² = 215025895822344482, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 327891673, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (327891673) 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, 163945835 + 163945836.

It is an arithmetic number, because the mean of its divisors is an integer number (163945836).

Almost surely, 2^327891671 is an apocalyptic number.

327891671 is a deficient number, since it is larger than the sum of its proper divisors (1).

327891671 is an equidigital number, since it uses as much as digits as its factorization.

327891671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 44.

The square root of 327891671 is about 18107.7792950986. The cubic root of 327891671 is about 689.5675165610.

It can be divided in two parts, 3278 and 91671, that added together give a palindrome (94949).

The spelling of 327891671 in words is "three hundred twenty-seven million, eight hundred ninety-one thousand, six hundred seventy-one".