634789900 has 36 divisors (see below), whose sum is σ = 1379092288. Its totient is φ = 253621440.

The previous prime is 634789873. The next prime is 634789907. The reversal of 634789900 is 9987436.

It is not an unprimeable number, because it can be changed into a prime (634789907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96517 + ... + 102883.

Almost surely, 2^634789900 is an apocalyptic number.

It is an amenable number.

634789900 is an abundant number, since it is smaller than the sum of its proper divisors (744302388).

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

634789900 is a wasteful number, since it uses less digits than its factorization.

634789900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7378 (or 7371 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 634789900 is about 25195.0372097364. The cubic root of 634789900 is about 859.4289972022.

The spelling of 634789900 in words is "six hundred thirty-four million, seven hundred eighty-nine thousand, nine hundred".