13666089 has 8 divisors (see below), whose sum is σ = 18365440. Its totient is φ = 9038736.

The previous prime is 13666069. The next prime is 13666091. The reversal of 13666089 is 98066631.

It is a happy number.

13666089 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13666089 - 2⁷ = 13665961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13666019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17554 + ... + 18315.

It is an arithmetic number, because the mean of its divisors is an integer number (2295680).

Almost surely, 2^13666089 is an apocalyptic number.

It is an amenable number.

13666089 is a deficient number, since it is larger than the sum of its proper divisors (4699351).

13666089 is a wasteful number, since it uses less digits than its factorization.

13666089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35999.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 13666089 is about 3696.7673716370. The cubic root of 13666089 is about 239.0826613694.

The spelling of 13666089 in words is "thirteen million, six hundred sixty-six thousand, eighty-nine".