13712987 has 4 divisors (see below), whose sum is σ = 13854456. Its totient is φ = 13571520.

The previous prime is 13712971. The next prime is 13712989. The reversal of 13712987 is 78921731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13712987 - 2⁴ = 13712971 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13712987.

It is not an unprimeable number, because it can be changed into a prime (13712989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70589 + ... + 70782.

It is an arithmetic number, because the mean of its divisors is an integer number (3463614).

Almost surely, 2^13712987 is an apocalyptic number.

13712987 is a deficient number, since it is larger than the sum of its proper divisors (141469).

13712987 is an equidigital number, since it uses as much as digits as its factorization.

13712987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141468.

The product of its digits is 21168, while the sum is 38.

The square root of 13712987 is about 3703.1050484695. The cubic root of 13712987 is about 239.3558362587.

The spelling of 13712987 in words is "thirteen million, seven hundred twelve thousand, nine hundred eighty-seven".