326666887 has 2 divisors, whose sum is σ = 326666888. Its totient is φ = 326666886.

The previous prime is 326666881. The next prime is 326666909. The reversal of 326666887 is 788666623.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-326666887 is a prime.

It is a super-2 number, since 2×326666887² = 213422510124541538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (326666881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163333443 + 163333444.

It is an arithmetic number, because the mean of its divisors is an integer number (163333444).

Almost surely, 2^326666887 is an apocalyptic number.

326666887 is a deficient number, since it is larger than the sum of its proper divisors (1).

326666887 is an equidigital number, since it uses as much as digits as its factorization.

326666887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3483648, while the sum is 52.

The square root of 326666887 is about 18073.9283776383. The cubic root of 326666887 is about 688.7078576064.

The spelling of 326666887 in words is "three hundred twenty-six million, six hundred sixty-six thousand, eight hundred eighty-seven".