13012687 has 4 divisors (see below), whose sum is σ = 13578480. Its totient is φ = 12446896.

The previous prime is 13012679. The next prime is 13012691. The reversal of 13012687 is 78621031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78621031 = 19 ⋅4137949.

It is a cyclic number.

It is not a de Polignac number, because 13012687 - 2³ = 13012679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13012697) 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, 282862 + ... + 282907.

It is an arithmetic number, because the mean of its divisors is an integer number (3394620).

Almost surely, 2^13012687 is an apocalyptic number.

13012687 is a deficient number, since it is larger than the sum of its proper divisors (565793).

13012687 is an equidigital number, since it uses as much as digits as its factorization.

13012687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565792.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 13012687 is about 3607.3102167682. The cubic root of 13012687 is about 235.2099346286.

The spelling of 13012687 in words is "thirteen million, twelve thousand, six hundred eighty-seven".