636242636 has 12 divisors (see below), whose sum is σ = 1149341760. Its totient is φ = 307859280.

The previous prime is 636242623. The next prime is 636242647.

636242636 is nontrivially palindromic in base 10.

636242636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 636242636.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2565371 + ... + 2565618.

It is an arithmetic number, because the mean of its divisors is an integer number (95778480).

Almost surely, 2^636242636 is an apocalyptic number.

It is an amenable number.

636242636 is a deficient number, since it is larger than the sum of its proper divisors (513099124).

636242636 is a wasteful number, since it uses less digits than its factorization.

636242636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5131024 (or 5131022 counting only the distinct ones).

The product of its digits is 186624, while the sum is 38.

The square root of 636242636 is about 25223.8505387262. The cubic root of 636242636 is about 860.0841075123.

The spelling of 636242636 in words is "six hundred thirty-six million, two hundred forty-two thousand, six hundred thirty-six".