13666085 has 8 divisors (see below), whose sum is σ = 16421496. Its totient is φ = 10918080.

The previous prime is 13666069. The next prime is 13666091. The reversal of 13666085 is 58066631.

It can be written as a sum of positive squares in 4 ways, for example, as 20449 + 13645636 = 143^2 + 3694^2 .

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

It is not a de Polignac number, because 13666085 - 2⁴ = 13666069 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3767 + ... + 6443.

It is an arithmetic number, because the mean of its divisors is an integer number (2052687).

Almost surely, 2^13666085 is an apocalyptic number.

It is an amenable number.

13666085 is a deficient number, since it is larger than the sum of its proper divisors (2755411).

13666085 is a wasteful number, since it uses less digits than its factorization.

13666085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3703.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 13666085 is about 3696.7668306238. The cubic root of 13666085 is about 239.0826380433.

The spelling of 13666085 in words is "thirteen million, six hundred sixty-six thousand, eighty-five".