12763866 has 16 divisors (see below), whose sum is σ = 25621344. Its totient is φ = 4239024.

The previous prime is 12763859. The next prime is 12763897. The reversal of 12763866 is 66836721.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2061 + ... + 5456.

It is an arithmetic number, because the mean of its divisors is an integer number (1601334).

Almost surely, 2^12763866 is an apocalyptic number.

12763866 is an abundant number, since it is smaller than the sum of its proper divisors (12857478).

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

12763866 is a wasteful number, since it uses less digits than its factorization.

12763866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7805.

The product of its digits is 72576, while the sum is 39.

The square root of 12763866 is about 3572.6553150283. The cubic root of 12763866 is about 233.7010939845.

The spelling of 12763866 in words is "twelve million, seven hundred sixty-three thousand, eight hundred sixty-six".