13957684 has 24 divisors (see below), whose sum is σ = 26869248. Its totient is φ = 6303840.

The previous prime is 13957679. The next prime is 13957703. The reversal of 13957684 is 48675931.

It is a self number, because there is not a number n which added to its sum of digits gives 13957684.

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 7 ways as a sum of consecutive naturals, for example, 412 + ... + 5299.

It is an arithmetic number, because the mean of its divisors is an integer number (1119552).

Almost surely, 2^13957684 is an apocalyptic number.

It is an amenable number.

13957684 is a deficient number, since it is larger than the sum of its proper divisors (12911564).

13957684 is a wasteful number, since it uses less digits than its factorization.

13957684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5775 (or 5773 counting only the distinct ones).

The product of its digits is 181440, while the sum is 43.

The square root of 13957684 is about 3735.9983940039. The cubic root of 13957684 is about 240.7711537798.

It can be divided in two parts, 13957 and 684, that added together give a palindrome (14641).

The spelling of 13957684 in words is "thirteen million, nine hundred fifty-seven thousand, six hundred eighty-four".