636484636 has 12 divisors (see below), whose sum is σ = 1114988112. Its totient is φ = 317916608.

The previous prime is 636484633. The next prime is 636484637.

636484636 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×636484636² = 810225383728104992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (636484633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77005 + ... + 84868.

It is an arithmetic number, because the mean of its divisors is an integer number (92915676).

Almost surely, 2^636484636 is an apocalyptic number.

It is an amenable number.

636484636 is a deficient number, since it is larger than the sum of its proper divisors (478503476).

636484636 is a wasteful number, since it uses less digits than its factorization.

636484636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162860 (or 162858 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 46.

The square root of 636484636 is about 25228.6471298007. The cubic root of 636484636 is about 860.1931403239.

The spelling of 636484636 in words is "six hundred thirty-six million, four hundred eighty-four thousand, six hundred thirty-six".