634565020 has 24 divisors (see below), whose sum is σ = 1336233024. Its totient is φ = 253131456.

The previous prime is 634565011. The next prime is 634565027. The reversal of 634565020 is 20565436.

634565020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634565027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35887 + ... + 50566.

It is an arithmetic number, because the mean of its divisors is an integer number (55676376).

Almost surely, 2^634565020 is an apocalyptic number.

It is an amenable number.

634565020 is an abundant number, since it is smaller than the sum of its proper divisors (701668004).

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

634565020 is a wasteful number, since it uses less digits than its factorization.

634565020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86829 (or 86827 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 634565020 is about 25190.5740307759. The cubic root of 634565020 is about 859.3274984124.

The spelling of 634565020 in words is "six hundred thirty-four million, five hundred sixty-five thousand, twenty".