13587986 has 16 divisors (see below), whose sum is σ = 21513600. Its totient is φ = 6423648.

The previous prime is 13587971. The next prime is 13587989. The reversal of 13587986 is 68978531.

It is a happy number.

13587986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 13587986.

It is not an unprimeable number, because it can be changed into a prime (13587989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2435 + ... + 5753.

It is an arithmetic number, because the mean of its divisors is an integer number (1344600).

Almost surely, 2^13587986 is an apocalyptic number.

13587986 is a deficient number, since it is larger than the sum of its proper divisors (7925614).

13587986 is a wasteful number, since it uses less digits than its factorization.

13587986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3433.

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

The square root of 13587986 is about 3686.1885464528. The cubic root of 13587986 is about 238.6263308792.

The spelling of 13587986 in words is "thirteen million, five hundred eighty-seven thousand, nine hundred eighty-six".