13666206 has 32 divisors (see below), whose sum is σ = 28938240. Its totient is φ = 4290624.

The previous prime is 13666193. The next prime is 13666223. The reversal of 13666206 is 60266631.

13666206 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35491 + ... + 35873.

It is an arithmetic number, because the mean of its divisors is an integer number (904320).

Almost surely, 2^13666206 is an apocalyptic number.

13666206 is an abundant number, since it is smaller than the sum of its proper divisors (15272034).

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

13666206 is a wasteful number, since it uses less digits than its factorization.

13666206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 13666206 is about 3696.7831962397. The cubic root of 13666206 is about 239.0833436566.

The spelling of 13666206 in words is "thirteen million, six hundred sixty-six thousand, two hundred six".