634535730 has 96 divisors (see below), whose sum is σ = 1728739584. Its totient is φ = 161175168.

The previous prime is 634535729. The next prime is 634535771. The reversal of 634535730 is 37535436.

634535730 is a `hidden beast` number, since 6 + 34 + 53 + 573 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 655707 + ... + 656673.

It is an arithmetic number, because the mean of its divisors is an integer number (18007704).

Almost surely, 2^634535730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 634535730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (864369792).

634535730 is an abundant number, since it is smaller than the sum of its proper divisors (1094203854).

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

634535730 is a wasteful number, since it uses less digits than its factorization.

634535730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320 (or 1317 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 36.

The square root of 634535730 is about 25189.9926558147. The cubic root of 634535730 is about 859.3142767100.

The spelling of 634535730 in words is "six hundred thirty-four million, five hundred thirty-five thousand, seven hundred thirty".