13087975 has 6 divisors (see below), whose sum is σ = 16229120. Its totient is φ = 10470360.

The previous prime is 13087967. The next prime is 13087993. The reversal of 13087975 is 57978031.

It is not a de Polignac number, because 13087975 - 2³ = 13087967 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 261735 + ... + 261784.

Almost surely, 2^13087975 is an apocalyptic number.

13087975 is a deficient number, since it is larger than the sum of its proper divisors (3141145).

13087975 is an equidigital number, since it uses as much as digits as its factorization.

13087975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523529 (or 523524 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 13087975 is about 3617.7306422673. The cubic root of 13087975 is about 235.6626836187.

The spelling of 13087975 in words is "thirteen million, eighty-seven thousand, nine hundred seventy-five".