13657684 has 6 divisors (see below), whose sum is σ = 23900954. Its totient is φ = 6828840.

The previous prime is 13657669. The next prime is 13657691. The reversal of 13657684 is 48675631.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8940100 + 4717584 = 2990^2 + 2172^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1707207 + ... + 1707214.

Almost surely, 2^13657684 is an apocalyptic number.

It is an amenable number.

13657684 is a deficient number, since it is larger than the sum of its proper divisors (10243270).

13657684 is a wasteful number, since it uses less digits than its factorization.

13657684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3414425 (or 3414423 counting only the distinct ones).

The product of its digits is 120960, while the sum is 40.

The square root of 13657684 is about 3695.6303927747. The cubic root of 13657684 is about 239.0336373003.

It can be divided in two parts, 13657 and 684, that added together give a palindrome (14341).

The spelling of 13657684 in words is "thirteen million, six hundred fifty-seven thousand, six hundred eighty-four".