12646866 has 8 divisors (see below), whose sum is σ = 25293744. Its totient is φ = 4215620.

The previous prime is 12646841. The next prime is 12646867. The reversal of 12646866 is 66864621.

12646866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

12646866 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (12646867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1053900 + ... + 1053911.

It is an arithmetic number, because the mean of its divisors is an integer number (3161718).

Almost surely, 2^12646866 is an apocalyptic number.

12646866 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.

12646866 is a wasteful number, since it uses less digits than its factorization.

12646866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2107816.

The product of its digits is 82944, while the sum is 39.

The square root of 12646866 is about 3556.2432425243. The cubic root of 12646866 is about 232.9848271233.

It can be divided in two parts, 12 and 646866, that multiplied together give a cube (7762392 = 198³).

The spelling of 12646866 in words is "twelve million, six hundred forty-six thousand, eight hundred sixty-six".