13666916 has 12 divisors (see below), whose sum is σ = 24154620. Its totient is φ = 6765600.

The previous prime is 13666889. The next prime is 13666927. The reversal of 13666916 is 61966631.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11833600 + 1833316 = 3440^2 + 1354^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13666916.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16511 + ... + 17318.

It is an arithmetic number, because the mean of its divisors is an integer number (2012885).

Almost surely, 2^13666916 is an apocalyptic number.

It is an amenable number.

13666916 is a deficient number, since it is larger than the sum of its proper divisors (10487704).

13666916 is a wasteful number, since it uses less digits than its factorization.

13666916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33934 (or 33932 counting only the distinct ones).

The product of its digits is 34992, while the sum is 38.

The square root of 13666916 is about 3696.8792244270. The cubic root of 13666916 is about 239.0874839482.

The spelling of 13666916 in words is "thirteen million, six hundred sixty-six thousand, nine hundred sixteen".