13687936 has 16 divisors (see below), whose sum is σ = 27269190. Its totient is φ = 6843904.

The previous prime is 13687931. The next prime is 13687937. The reversal of 13687936 is 63978631.

It can be written as a sum of positive squares in only one way, i.e., 12110400 + 1577536 = 3480^2 + 1256^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a junction number, because it is equal to n+sod(n) for n = 13687892 and 13687901.

It is not an unprimeable number, because it can be changed into a prime (13687931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53341 + ... + 53596.

Almost surely, 2^13687936 is an apocalyptic number.

13687936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13687936 is a deficient number, since it is larger than the sum of its proper divisors (13581254).

13687936 is an equidigital number, since it uses as much as digits as its factorization.

13687936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106951 (or 106939 counting only the distinct ones).

The product of its digits is 163296, while the sum is 43.

The square root of 13687936 is about 3699.7210705673. The cubic root of 13687936 is about 239.2099949963.

The spelling of 13687936 in words is "thirteen million, six hundred eighty-seven thousand, nine hundred thirty-six".