12686782 has 16 divisors (see below), whose sum is σ = 19677312. Its totient is φ = 6130080.

The previous prime is 12686759. The next prime is 12686783. The reversal of 12686782 is 28768621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12686783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12307 + ... + 13297.

It is an arithmetic number, because the mean of its divisors is an integer number (1229832).

Almost surely, 2^12686782 is an apocalyptic number.

12686782 is a deficient number, since it is larger than the sum of its proper divisors (6990530).

12686782 is a wasteful number, since it uses less digits than its factorization.

12686782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203.

The product of its digits is 64512, while the sum is 40.

The square root of 12686782 is about 3561.8509233262. The cubic root of 12686782 is about 233.2296850313.

The spelling of 12686782 in words is "twelve million, six hundred eighty-six thousand, seven hundred eighty-two".