12668805 has 24 divisors (see below), whose sum is σ = 22774752. Its totient is φ = 6756048.

The previous prime is 12668797. The next prime is 12668807. The reversal of 12668805 is 50886621.

It is a happy number.

12668805 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12668805 - 2³ = 12668797 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12668805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12668807) 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 23 ways as a sum of consecutive naturals, for example, 3999 + ... + 6428.

It is an arithmetic number, because the mean of its divisors is an integer number (948948).

Almost surely, 2^12668805 is an apocalyptic number.

12668805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12668805 is a deficient number, since it is larger than the sum of its proper divisors (10105947).

12668805 is an equidigital number, since it uses as much as digits as its factorization.

12668805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10447 (or 10435 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 12668805 is about 3559.3264812321. The cubic root of 12668805 is about 233.1194718458.

The spelling of 12668805 in words is "twelve million, six hundred sixty-eight thousand, eight hundred five".