634433064 has 64 divisors (see below), whose sum is σ = 1682130240. Its totient is φ = 198712320.

The previous prime is 634433021. The next prime is 634433069. The reversal of 634433064 is 460334436.

It is not an unprimeable number, because it can be changed into a prime (634433069) 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 15 ways as a sum of consecutive naturals, for example, 415807 + ... + 417329.

It is an arithmetic number, because the mean of its divisors is an integer number (26283285).

Almost surely, 2^634433064 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 634433064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (841065120).

634433064 is an abundant number, since it is smaller than the sum of its proper divisors (1047697176).

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

634433064 is a wasteful number, since it uses less digits than its factorization.

634433064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2570 (or 2566 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 33.

The square root of 634433064 is about 25187.9547403119. The cubic root of 634433064 is about 859.2679293761.

The spelling of 634433064 in words is "six hundred thirty-four million, four hundred thirty-three thousand, sixty-four".