13666236 has 12 divisors (see below), whose sum is σ = 31887912. Its totient is φ = 4555408.

The previous prime is 13666231. The next prime is 13666253. The reversal of 13666236 is 63266631.

It is a happy number.

13666236 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 13666197 and 13666206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13666231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 569415 + ... + 569438.

It is an arithmetic number, because the mean of its divisors is an integer number (2657326).

Almost surely, 2^13666236 is an apocalyptic number.

It is an amenable number.

13666236 is an abundant number, since it is smaller than the sum of its proper divisors (18221676).

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

13666236 is a wasteful number, since it uses less digits than its factorization.

13666236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1138860 (or 1138858 counting only the distinct ones).

The product of its digits is 23328, while the sum is 33.

The square root of 13666236 is about 3696.7872538192. The cubic root of 13666236 is about 239.0835186014.

The spelling of 13666236 in words is "thirteen million, six hundred sixty-six thousand, two hundred thirty-six".