12765986 has 16 divisors (see below), whose sum is σ = 20808960. Its totient is φ = 5851440.

The previous prime is 12765959. The next prime is 12766001. The reversal of 12765986 is 68956721.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4241 + ... + 6596.

It is an arithmetic number, because the mean of its divisors is an integer number (1300560).

Almost surely, 2^12765986 is an apocalyptic number.

12765986 is a deficient number, since it is larger than the sum of its proper divisors (8042974).

12765986 is a wasteful number, since it uses less digits than its factorization.

12765986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10889.

The product of its digits is 181440, while the sum is 44.

The square root of 12765986 is about 3572.9520007971. The cubic root of 12765986 is about 233.7140320419.

The spelling of 12765986 in words is "twelve million, seven hundred sixty-five thousand, nine hundred eighty-six".