13685975 has 12 divisors (see below), whose sum is σ = 17164080. Its totient is φ = 10824000.

The previous prime is 13685957. The next prime is 13685981. The reversal of 13685975 is 57958631.

It is not a de Polignac number, because 13685975 - 2¹⁸ = 13423831 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 851 + ... + 5300.

It is an arithmetic number, because the mean of its divisors is an integer number (1430340).

Almost surely, 2^13685975 is an apocalyptic number.

13685975 is a deficient number, since it is larger than the sum of its proper divisors (3478105).

13685975 is an equidigital number, since it uses as much as digits as its factorization.

13685975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6250 (or 6245 counting only the distinct ones).

The product of its digits is 226800, while the sum is 44.

The square root of 13685975 is about 3699.4560410958. The cubic root of 13685975 is about 239.1985709899.

The spelling of 13685975 in words is "thirteen million, six hundred eighty-five thousand, nine hundred seventy-five".