13286587 has 4 divisors (see below), whose sum is σ = 13294360. Its totient is φ = 13278816.

The previous prime is 13286561. The next prime is 13286597. The reversal of 13286587 is 78568231.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 78568231 = 7 ⋅11224033.

It is a cyclic number.

It is not a de Polignac number, because 13286587 - 2¹¹ = 13284539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13286597) 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, 78 + ... + 5155.

It is an arithmetic number, because the mean of its divisors is an integer number (3323590).

Almost surely, 2^13286587 is an apocalyptic number.

13286587 is a deficient number, since it is larger than the sum of its proper divisors (7773).

13286587 is an equidigital number, since it uses as much as digits as its factorization.

13286587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7772.

The product of its digits is 80640, while the sum is 40.

The square root of 13286587 is about 3645.0770910915. The cubic root of 13286587 is about 236.8487762756.

The spelling of 13286587 in words is "thirteen million, two hundred eighty-six thousand, five hundred eighty-seven".