12785586 has 32 divisors (see below), whose sum is σ = 28143936. Its totient is φ = 3872000.

The previous prime is 12785579. The next prime is 12785587. The reversal of 12785586 is 68558721.

12785586 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12785587) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7186 + ... + 8786.

It is an arithmetic number, because the mean of its divisors is an integer number (879498).

Almost surely, 2^12785586 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12785586, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14071968).

12785586 is an abundant number, since it is smaller than the sum of its proper divisors (15358350).

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

12785586 is a wasteful number, since it uses less digits than its factorization.

12785586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1639 (or 1617 counting only the distinct ones).

The product of its digits is 134400, while the sum is 42.

The square root of 12785586 is about 3575.6937788351. The cubic root of 12785586 is about 233.8335802612.

The spelling of 12785586 in words is "twelve million, seven hundred eighty-five thousand, five hundred eighty-six".