13671685 has 16 divisors (see below), whose sum is σ = 17116416. Its totient is φ = 10473408.

The previous prime is 13671653. The next prime is 13671701. The reversal of 13671685 is 58617631.

13671685 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 13671685 - 2⁵ = 13671653 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11844 + ... + 12946.

It is an arithmetic number, because the mean of its divisors is an integer number (1069776).

Almost surely, 2^13671685 is an apocalyptic number.

It is an amenable number.

13671685 is a deficient number, since it is larger than the sum of its proper divisors (3444731).

13671685 is a wasteful number, since it uses less digits than its factorization.

13671685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212.

The product of its digits is 30240, while the sum is 37.

The square root of 13671685 is about 3697.5241716587. The cubic root of 13671685 is about 239.1152901632.

The spelling of 13671685 in words is "thirteen million, six hundred seventy-one thousand, six hundred eighty-five".