13986587 has 2 divisors, whose sum is σ = 13986588. Its totient is φ = 13986586.

The previous prime is 13986571. The next prime is 13986593. The reversal of 13986587 is 78568931.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13986587 - 2⁴ = 13986571 is a prime.

It is not a weakly prime, because it can be changed into another prime (13986547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6993293 + 6993294.

It is an arithmetic number, because the mean of its divisors is an integer number (6993294).

Almost surely, 2^13986587 is an apocalyptic number.

13986587 is a deficient number, since it is larger than the sum of its proper divisors (1).

13986587 is an equidigital number, since it uses as much as digits as its factorization.

13986587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 47.

The square root of 13986587 is about 3739.8645697405. The cubic root of 13986587 is about 240.9372322089.

The spelling of 13986587 in words is "thirteen million, nine hundred eighty-six thousand, five hundred eighty-seven".