636113386 has 16 divisors (see below), whose sum is σ = 975825864. Its totient is φ = 310915584.

The previous prime is 636113363. The next prime is 636113389. The reversal of 636113386 is 683311636.

It can be written as a sum of positive squares in 4 ways, for example, as 325261225 + 310852161 = 18035^2 + 17631^2 .

It is not an unprimeable number, because it can be changed into a prime (636113389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2781 + ... + 35776.

Almost surely, 2^636113386 is an apocalyptic number.

636113386 is a deficient number, since it is larger than the sum of its proper divisors (339712478).

636113386 is a wasteful number, since it uses less digits than its factorization.

636113386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38745.

The product of its digits is 46656, while the sum is 37.

The square root of 636113386 is about 25221.2883493290. The cubic root of 636113386 is about 860.0258627521.

The spelling of 636113386 in words is "six hundred thirty-six million, one hundred thirteen thousand, three hundred eighty-six".