12636486 has 44 divisors (see below), whose sum is σ = 28697652. Its totient is φ = 4172796.

The previous prime is 12636473. The next prime is 12636497. The reversal of 12636486 is 68463621.

12636486 is a `hidden beast` number, since 1 + 2 + 6 + 3 + 648 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 12636486.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 21 ways as a sum of consecutive naturals, for example, 118045 + ... + 118151.

Almost surely, 2^12636486 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12636486, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14348826).

12636486 is an abundant number, since it is smaller than the sum of its proper divisors (16061166).

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

12636486 is an frugal number, since it uses more digits than its factorization.

12636486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 112 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 12636486 is about 3554.7835377137. The cubic root of 12636486 is about 232.9210683907.

The spelling of 12636486 in words is "twelve million, six hundred thirty-six thousand, four hundred eighty-six".