634920580 has 24 divisors (see below), whose sum is σ = 1523809728. Its totient is φ = 217687008.

The previous prime is 634920541. The next prime is 634920593. The reversal of 634920580 is 85029436.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2267434 + ... + 2267713.

It is an arithmetic number, because the mean of its divisors is an integer number (63492072).

Almost surely, 2^634920580 is an apocalyptic number.

It is an amenable number.

634920580 is an abundant number, since it is smaller than the sum of its proper divisors (888889148).

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

634920580 is a wasteful number, since it uses less digits than its factorization.

634920580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4535163 (or 4535161 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 634920580 is about 25197.6304441509. The cubic root of 634920580 is about 859.4879681443.

The spelling of 634920580 in words is "six hundred thirty-four million, nine hundred twenty thousand, five hundred eighty".