327698729 has 2 divisors, whose sum is σ = 327698730. Its totient is φ = 327698728.

The previous prime is 327698713. The next prime is 327698731. The reversal of 327698729 is 927896723.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 254562025 + 73136704 = 15955^2 + 8552^2 .

It is a cyclic number.

It is not a de Polignac number, because 327698729 - 2⁴ = 327698713 is a prime.

It is a Sophie Germain prime.

Together with 327698731, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (327695729) 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, 163849364 + 163849365.

It is an arithmetic number, because the mean of its divisors is an integer number (163849365).

Almost surely, 2^327698729 is an apocalyptic number.

It is an amenable number.

327698729 is a deficient number, since it is larger than the sum of its proper divisors (1).

327698729 is an equidigital number, since it uses as much as digits as its factorization.

327698729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2286144, while the sum is 53.

The square root of 327698729 is about 18102.4509114098. The cubic root of 327698729 is about 689.4322354582.

The spelling of 327698729 in words is "three hundred twenty-seven million, six hundred ninety-eight thousand, seven hundred twenty-nine".