13587887 has 2 divisors, whose sum is σ = 13587888. Its totient is φ = 13587886.

The previous prime is 13587883. The next prime is 13587923. The reversal of 13587887 is 78878531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13587887 - 2² = 13587883 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13587883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6793943 + 6793944.

It is an arithmetic number, because the mean of its divisors is an integer number (6793944).

Almost surely, 2^13587887 is an apocalyptic number.

13587887 is a deficient number, since it is larger than the sum of its proper divisors (1).

13587887 is an equidigital number, since it uses as much as digits as its factorization.

13587887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 376320, while the sum is 47.

The square root of 13587887 is about 3686.1751179237. The cubic root of 13587887 is about 238.6257513461.

The spelling of 13587887 in words is "thirteen million, five hundred eighty-seven thousand, eight hundred eighty-seven".