636642412 has 24 divisors (see below), whose sum is σ = 1314360320. Its totient is φ = 264044880.

The previous prime is 636642407. The next prime is 636642431. The reversal of 636642412 is 214246636.

636642412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 365862 + ... + 367597.

Almost surely, 2^636642412 is an apocalyptic number.

636642412 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

636642412 is an abundant number, since it is smaller than the sum of its proper divisors (677717908).

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

636642412 is a wasteful number, since it uses less digits than its factorization.

636642412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733501 (or 733499 counting only the distinct ones).

The product of its digits is 41472, while the sum is 34.

The square root of 636642412 is about 25231.7738575789. The cubic root of 636642412 is about 860.2642112304.

The spelling of 636642412 in words is "six hundred thirty-six million, six hundred forty-two thousand, four hundred twelve".