13668085 has 12 divisors (see below), whose sum is σ = 17409924. Its totient is φ = 10265600.

The previous prime is 13668071. The next prime is 13668097. The reversal of 13668085 is 58086631.

13668085 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 6517809 + 7150276 = 2553^2 + 2674^2 .

It is not a de Polignac number, because 13668085 - 2⁹ = 13667573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33885 + ... + 34285.

It is an arithmetic number, because the mean of its divisors is an integer number (1450827).

Almost surely, 2^13668085 is an apocalyptic number.

It is an amenable number.

13668085 is a deficient number, since it is larger than the sum of its proper divisors (3741839).

13668085 is an frugal number, since it uses more digits than its factorization.

13668085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824 (or 423 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 13668085 is about 3697.0373273744. The cubic root of 13668085 is about 239.0943005385.

The spelling of 13668085 in words is "thirteen million, six hundred sixty-eight thousand, eighty-five".