87966887 has 2 divisors, whose sum is σ = 87966888. Its totient is φ = 87966886.

The previous prime is 87966869. The next prime is 87966911. The reversal of 87966887 is 78866978.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87966887 - 2²⁶ = 20858023 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87966287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43983443 + 43983444.

It is an arithmetic number, because the mean of its divisors is an integer number (43983444).

Almost surely, 2^87966887 is an apocalyptic number.

87966887 is a deficient number, since it is larger than the sum of its proper divisors (1).

87966887 is an equidigital number, since it uses as much as digits as its factorization.

87966887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8128512, while the sum is 59.

The square root of 87966887 is about 9379.0664247568. The cubic root of 87966887 is about 444.7402212263.

Subtracting from 87966887 its reverse (78866978), we obtain a palindrome (9099909).

The spelling of 87966887 in words is "eighty-seven million, nine hundred sixty-six thousand, eight hundred eighty-seven".