13685149 has 12 divisors (see below), whose sum is σ = 14593824. Its totient is φ = 12830472.

The previous prime is 13685141. The next prime is 13685159. The reversal of 13685149 is 94158631.

13685149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13685149 - 2³ = 13685141 is a prime.

Its product of digits (25920) is a multiple of the sum of its prime factors (432).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13685141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60174 + ... + 60400.

It is an arithmetic number, because the mean of its divisors is an integer number (1216152).

Almost surely, 2^13685149 is an apocalyptic number.

13685149 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

13685149 is a deficient number, since it is larger than the sum of its proper divisors (908675).

13685149 is a wasteful number, since it uses less digits than its factorization.

13685149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432 (or 413 counting only the distinct ones).

The product of its digits is 25920, while the sum is 37.

The square root of 13685149 is about 3699.3444013771. The cubic root of 13685149 is about 239.1937587157.

It can be divided in two parts, 136851 and 49, that added together give a square (136900 = 370²).

The spelling of 13685149 in words is "thirteen million, six hundred eighty-five thousand, one hundred forty-nine".