13867685 has 8 divisors (see below), whose sum is σ = 17921400. Its totient is φ = 10240704.

The previous prime is 13867681. The next prime is 13867687. The reversal of 13867685 is 58676831.

It can be written as a sum of positive squares in 4 ways, for example, as 784996 + 13082689 = 886^2 + 3617^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13867685 - 2² = 13867681 is a prime.

It is a super-3 number, since 3×13867685³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13867681) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 106610 + ... + 106739.

It is an arithmetic number, because the mean of its divisors is an integer number (2240175).

Almost surely, 2^13867685 is an apocalyptic number.

It is an amenable number.

13867685 is a deficient number, since it is larger than the sum of its proper divisors (4053715).

13867685 is a wasteful number, since it uses less digits than its factorization.

13867685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213367.

The product of its digits is 241920, while the sum is 44.

The square root of 13867685 is about 3723.9340756786. The cubic root of 13867685 is about 240.2525408827.

The spelling of 13867685 in words is "thirteen million, eight hundred sixty-seven thousand, six hundred eighty-five".