13685427 has 12 divisors (see below), whose sum is σ = 22591920. Its totient is φ = 7820208.

The previous prime is 13685423. The next prime is 13685461. The reversal of 13685427 is 72458631.

13685427 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 13685427 - 2² = 13685423 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 13685391 and 13685400.

It is not an unprimeable number, because it can be changed into a prime (13685423) 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, 108552 + ... + 108677.

It is an arithmetic number, because the mean of its divisors is an integer number (1882660).

Almost surely, 2^13685427 is an apocalyptic number.

13685427 is a deficient number, since it is larger than the sum of its proper divisors (8906493).

13685427 is a wasteful number, since it uses less digits than its factorization.

13685427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217242 (or 217239 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 13685427 is about 3699.3819754116. The cubic root of 13685427 is about 239.1953783647.

The spelling of 13685427 in words is "thirteen million, six hundred eighty-five thousand, four hundred twenty-seven".