13087859 has 6 divisors (see below), whose sum is σ = 13524660. Its totient is φ = 12664740.

The previous prime is 13087819. The next prime is 13087861. The reversal of 13087859 is 95878031.

It is a happy number.

It is not a de Polignac number, because 13087859 - 2²⁰ = 12039283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13087819) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5849 + ... + 7770.

It is an arithmetic number, because the mean of its divisors is an integer number (2254110).

Almost surely, 2^13087859 is an apocalyptic number.

13087859 is a deficient number, since it is larger than the sum of its proper divisors (436801).

13087859 is an equidigital number, since it uses as much as digits as its factorization.

13087859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13681 (or 13650 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 13087859 is about 3617.7146100819. The cubic root of 13087859 is about 235.6619873829.

The spelling of 13087859 in words is "thirteen million, eighty-seven thousand, eight hundred fifty-nine".