13668845 has 8 divisors (see below), whose sum is σ = 16487064. Its totient is φ = 10878784.

The previous prime is 13668841. The next prime is 13668857. The reversal of 13668845 is 54886631.

13668845 is digitally balanced in base 2, 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 4 ways, for example, as 1965604 + 11703241 = 1402^2 + 3421^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 13668845 - 2² = 13668841 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13668841) 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, 5954 + ... + 7923.

It is an arithmetic number, because the mean of its divisors is an integer number (2060883).

Almost surely, 2^13668845 is an apocalyptic number.

It is an amenable number.

13668845 is a deficient number, since it is larger than the sum of its proper divisors (2818219).

13668845 is a wasteful number, since it uses less digits than its factorization.

13668845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14079.

The product of its digits is 138240, while the sum is 41.

The square root of 13668845 is about 3697.1401109506. The cubic root of 13668845 is about 239.0987319883.

The spelling of 13668845 in words is "thirteen million, six hundred sixty-eight thousand, eight hundred forty-five".