12986636 has 18 divisors (see below), whose sum is σ = 24610572. Its totient is φ = 5993520.

The previous prime is 12986609. The next prime is 12986647. The reversal of 12986636 is 63668921.

It is a junction number, because it is equal to n+sod(n) for n = 12986593 and 12986602.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8930 + ... + 10281.

It is an arithmetic number, because the mean of its divisors is an integer number (1367254).

Almost surely, 2^12986636 is an apocalyptic number.

It is an amenable number.

12986636 is a deficient number, since it is larger than the sum of its proper divisors (11623936).

12986636 is a wasteful number, since it uses less digits than its factorization.

12986636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19241 (or 19226 counting only the distinct ones).

The product of its digits is 93312, while the sum is 41.

The square root of 12986636 is about 3603.6975455773. The cubic root of 12986636 is about 235.0528687449.

The spelling of 12986636 in words is "twelve million, nine hundred eighty-six thousand, six hundred thirty-six".