635994492 has 48 divisors (see below), whose sum is σ = 1697240832. Its totient is φ = 181578240.

The previous prime is 635994473. The next prime is 635994503. The reversal of 635994492 is 294499536.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189267 + ... + 192597.

It is an arithmetic number, because the mean of its divisors is an integer number (35359184).

Almost surely, 2^635994492 is an apocalyptic number.

It is an amenable number.

635994492 is an abundant number, since it is smaller than the sum of its proper divisors (1061246340).

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

635994492 is a wasteful number, since it uses less digits than its factorization.

635994492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5618 (or 5616 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 51.

The square root of 635994492 is about 25218.9312223972. The cubic root of 635994492 is about 859.9722778156.

The spelling of 635994492 in words is "six hundred thirty-five million, nine hundred ninety-four thousand, four hundred ninety-two".