12685812 has 24 divisors (see below), whose sum is σ = 29800512. Its totient is φ = 4200000.

The previous prime is 12685763. The next prime is 12685837. The reversal of 12685812 is 21858621.

It is a congruent number.

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, 1689 + ... + 5312.

It is an arithmetic number, because the mean of its divisors is an integer number (1241688).

Almost surely, 2^12685812 is an apocalyptic number.

12685812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12685812 is an abundant number, since it is smaller than the sum of its proper divisors (17114700).

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

12685812 is a wasteful number, since it uses less digits than its factorization.

12685812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7159 (or 7157 counting only the distinct ones).

The product of its digits is 7680, while the sum is 33.

The square root of 12685812 is about 3561.7147555637. The cubic root of 12685812 is about 233.2237408247.

The spelling of 12685812 in words is "twelve million, six hundred eighty-five thousand, eight hundred twelve".