326997287 has 2 divisors, whose sum is σ = 326997288. Its totient is φ = 326997286.

The previous prime is 326997211. The next prime is 326997289. The reversal of 326997287 is 782799623.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 326997287 - 2¹⁶ = 326931751 is a prime.

Together with 326997289, 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 (326997289) 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, 163498643 + 163498644.

It is an arithmetic number, because the mean of its divisors is an integer number (163498644).

Almost surely, 2^326997287 is an apocalyptic number.

326997287 is a deficient number, since it is larger than the sum of its proper divisors (1).

326997287 is an equidigital number, since it uses as much as digits as its factorization.

326997287 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 326997287 is about 18083.0663052481. The cubic root of 326997287 is about 688.9399721465.

The spelling of 326997287 in words is "three hundred twenty-six million, nine hundred ninety-seven thousand, two hundred eighty-seven".