634923968 has 84 divisors (see below), whose sum is σ = 1472760072. Its totient is φ = 270789120.

The previous prime is 634923907. The next prime is 634923977. The reversal of 634923968 is 869329436.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 918503 + ... + 919193.

It is an arithmetic number, because the mean of its divisors is an integer number (17532858).

Almost surely, 2^634923968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 634923968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (736380036).

634923968 is an abundant number, since it is smaller than the sum of its proper divisors (837836104).

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

634923968 is a wasteful number, since it uses less digits than its factorization.

634923968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010 (or 993 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 50.

The square root of 634923968 is about 25197.6976726049. The cubic root of 634923968 is about 859.4894969130.

The spelling of 634923968 in words is "six hundred thirty-four million, nine hundred twenty-three thousand, nine hundred sixty-eight".