13646668 has 12 divisors (see below), whose sum is σ = 27293392. Its totient is φ = 5848560.

The previous prime is 13646651. The next prime is 13646669. The reversal of 13646668 is 86664631.

13646668 is an admirable number.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 13646668.

It is not an unprimeable number, because it can be changed into a prime (13646669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243663 + ... + 243718.

Almost surely, 2^13646668 is an apocalyptic number.

It is an amenable number.

13646668 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

13646668 is a wasteful number, since it uses less digits than its factorization.

13646668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487392 (or 487390 counting only the distinct ones).

The product of its digits is 124416, while the sum is 40.

The square root of 13646668 is about 3694.1396833363. The cubic root of 13646668 is about 238.9693535163.

The spelling of 13646668 in words is "thirteen million, six hundred forty-six thousand, six hundred sixty-eight".