636748498 has 12 divisors (see below), whose sum is σ = 1014612282. Its totient is φ = 299646080.

The previous prime is 636748493. The next prime is 636748499. The reversal of 636748498 is 894847636.

It can be written as a sum of positive squares in 3 ways, for example, as 612414009 + 24334489 = 24747^2 + 4933^2 .

It is not an unprimeable number, because it can be changed into a prime (636748493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 550243 + ... + 551398.

Almost surely, 2^636748498 is an apocalyptic number.

636748498 is a deficient number, since it is larger than the sum of its proper divisors (377863784).

636748498 is a wasteful number, since it uses less digits than its factorization.

636748498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1101677 (or 1101660 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 55.

The square root of 636748498 is about 25233.8760003294. The cubic root of 636748498 is about 860.3119915431.

The spelling of 636748498 in words is "six hundred thirty-six million, seven hundred forty-eight thousand, four hundred ninety-eight".