636424636 has 12 divisors (see below), whose sum is σ = 1134757512. Its totient is φ = 312208208.

The previous prime is 636424619. The next prime is 636424643.

636424636 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1500790 + ... + 1501213.

It is an arithmetic number, because the mean of its divisors is an integer number (94563126).

Almost surely, 2^636424636 is an apocalyptic number.

It is an amenable number.

636424636 is a deficient number, since it is larger than the sum of its proper divisors (498332876).

636424636 is a wasteful number, since it uses less digits than its factorization.

636424636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3002060 (or 3002058 counting only the distinct ones).

The product of its digits is 373248, while the sum is 40.

The square root of 636424636 is about 25227.4579773706. The cubic root of 636424636 is about 860.1661099724.

The spelling of 636424636 in words is "six hundred thirty-six million, four hundred twenty-four thousand, six hundred thirty-six".