634418064 has 60 divisors (see below), whose sum is σ = 2029134016. Its totient is φ = 181262016.

The previous prime is 634418033. The next prime is 634418089. The reversal of 634418064 is 460814436.

634418064 is a `hidden beast` number, since 634 + 4 + 18 + 0 + 6 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 313684 + ... + 315699.

Almost surely, 2^634418064 is an apocalyptic number.

It is an amenable number.

634418064 is an abundant number, since it is smaller than the sum of its proper divisors (1394715952).

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

634418064 is a wasteful number, since it uses less digits than its factorization.

634418064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629404 (or 629395 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 634418064 is about 25187.6569771783. The cubic root of 634418064 is about 859.2611573874.

The spelling of 634418064 in words is "six hundred thirty-four million, four hundred eighteen thousand, sixty-four".