634925920 has 48 divisors (see below), whose sum is σ = 1540567728. Its totient is φ = 247104000.

The previous prime is 634925903. The next prime is 634925927. The reversal of 634925920 is 29529436.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634925927) 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 7 ways as a sum of consecutive naturals, for example, 47706 + ... + 59545.

It is an arithmetic number, because the mean of its divisors is an integer number (32095161).

Almost surely, 2^634925920 is an apocalyptic number.

It is an amenable number.

634925920 is an abundant number, since it is smaller than the sum of its proper divisors (905641808).

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

634925920 is a wasteful number, since it uses less digits than its factorization.

634925920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107303 (or 107295 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 634925920 is about 25197.7364062727. The cubic root of 634925920 is about 859.4903777123.

The spelling of 634925920 in words is "six hundred thirty-four million, nine hundred twenty-five thousand, nine hundred twenty".