634738 has 8 divisors (see below), whose sum is σ = 1025388. Its totient is φ = 292944.

The previous prime is 634727. The next prime is 634741. The reversal of 634738 is 837436.

It can be written as a sum of positive squares in 2 ways, for example, as 558009 + 76729 = 747^2 + 277^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12181 + ... + 12232.

2⁶³⁴⁷³⁸ is an apocalyptic number.

634738 is a deficient number, since it is larger than the sum of its proper divisors (390650).

634738 is a wasteful number, since it uses less digits than its factorization.

634738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24428.

The product of its digits is 12096, while the sum is 31.

The square root of 634738 is about 796.7044621439. The cubic root of 634738 is about 85.9405574449.

The spelling of 634738 in words is "six hundred thirty-four thousand, seven hundred thirty-eight".