634258734 has 16 divisors (see below), whose sum is σ = 1268769360. Its totient is φ = 211377600.

The previous prime is 634258733. The next prime is 634258753. The reversal of 634258734 is 437852436.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634258733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44034 + ... + 56634.

It is an arithmetic number, because the mean of its divisors is an integer number (79298085).

Almost surely, 2^634258734 is an apocalyptic number.

634258734 is an abundant number, since it is smaller than the sum of its proper divisors (634510626).

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

634258734 is a wasteful number, since it uses less digits than its factorization.

634258734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20995.

The product of its digits is 483840, while the sum is 42.

The square root of 634258734 is about 25184.4939198706. The cubic root of 634258734 is about 859.1892187345.

The spelling of 634258734 in words is "six hundred thirty-four million, two hundred fifty-eight thousand, seven hundred thirty-four".