634666732 has 48 divisors (see below), whose sum is σ = 1306912320. Its totient is φ = 264056832.

The previous prime is 634666723. The next prime is 634666733. The reversal of 634666732 is 237666436.

It is not an unprimeable number, because it can be changed into a prime (634666733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141744 + ... + 146152.

It is an arithmetic number, because the mean of its divisors is an integer number (27227340).

Almost surely, 2^634666732 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 634666732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (653456160).

634666732 is an abundant number, since it is smaller than the sum of its proper divisors (672245588).

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

634666732 is a wasteful number, since it uses less digits than its factorization.

634666732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4570 (or 4568 counting only the distinct ones).

The product of its digits is 653184, while the sum is 43.

The square root of 634666732 is about 25192.5928002657. The cubic root of 634666732 is about 859.3734087323.

The spelling of 634666732 in words is "six hundred thirty-four million, six hundred sixty-six thousand, seven hundred thirty-two".