12868686 has 32 divisors (see below), whose sum is σ = 28788480. Its totient is φ = 4260888.

The previous prime is 12868657. The next prime is 12868697. The reversal of 12868686 is 68686821.

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 15 ways as a sum of consecutive naturals, for example, 8305 + ... + 9731.

It is an arithmetic number, because the mean of its divisors is an integer number (899640).

Almost surely, 2^12868686 is an apocalyptic number.

12868686 is an abundant number, since it is smaller than the sum of its proper divisors (15919794).

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

12868686 is a wasteful number, since it uses less digits than its factorization.

12868686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605 (or 1599 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 12868686 is about 3587.2950812555. The cubic root of 12868686 is about 234.3390876176.

The spelling of 12868686 in words is "twelve million, eight hundred sixty-eight thousand, six hundred eighty-six".