13688336 has 10 divisors (see below), whose sum is σ = 26521182. Its totient is φ = 6844160.

The previous prime is 13688333. The next prime is 13688347. The reversal of 13688336 is 63388631.

It can be written as a sum of positive squares in only one way, i.e., 13278736 + 409600 = 3644^2 + 640^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13688336.

It is not an unprimeable number, because it can be changed into a prime (13688333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427745 + ... + 427776.

Almost surely, 2^13688336 is an apocalyptic number.

13688336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13688336 is a deficient number, since it is larger than the sum of its proper divisors (12832846).

13688336 is an equidigital number, since it uses as much as digits as its factorization.

13688336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855529 (or 855523 counting only the distinct ones).

The product of its digits is 62208, while the sum is 38.

The square root of 13688336 is about 3699.7751283017. The cubic root of 13688336 is about 239.2123251033.

The spelling of 13688336 in words is "thirteen million, six hundred eighty-eight thousand, three hundred thirty-six".