636479112 has 16 divisors (see below), whose sum is σ = 1591197840. Its totient is φ = 212159696.

The previous prime is 636479101. The next prime is 636479113. The reversal of 636479112 is 211974636.

It is not an unprimeable number, because it can be changed into a prime (636479113) by changing a digit.

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, 13259958 + ... + 13260005.

It is an arithmetic number, because the mean of its divisors is an integer number (99449865).

Almost surely, 2^636479112 is an apocalyptic number.

It is an amenable number.

636479112 is an abundant number, since it is smaller than the sum of its proper divisors (954718728).

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

636479112 is a wasteful number, since it uses less digits than its factorization.

636479112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26519972 (or 26519968 counting only the distinct ones).

The product of its digits is 54432, while the sum is 39.

The square root of 636479112 is about 25228.5376508429. The cubic root of 636479112 is about 860.1906518005.

The spelling of 636479112 in words is "six hundred thirty-six million, four hundred seventy-nine thousand, one hundred twelve".