13666156 has 24 divisors (see below), whose sum is σ = 27851040. Its totient is φ = 5745792.

The previous prime is 13666127. The next prime is 13666189. The reversal of 13666156 is 65166631.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3121 + ... + 6088.

It is an arithmetic number, because the mean of its divisors is an integer number (1160460).

Almost surely, 2^13666156 is an apocalyptic number.

It is an amenable number.

13666156 is an abundant number, since it is smaller than the sum of its proper divisors (14184884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13666156 is a wasteful number, since it uses less digits than its factorization.

13666156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9273 (or 9271 counting only the distinct ones).

The product of its digits is 19440, while the sum is 34.

The square root of 13666156 is about 3696.7764335972. The cubic root of 13666156 is about 239.0830520813.

The spelling of 13666156 in words is "thirteen million, six hundred sixty-six thousand, one hundred fifty-six".