634641274 has 4 divisors (see below), whose sum is σ = 951961914. Its totient is φ = 317320636.

The previous prime is 634641251. The next prime is 634641281. The reversal of 634641274 is 472146436.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 517244049 + 117397225 = 22743^2 + 10835^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158660317 + ... + 158660320.

Almost surely, 2^634641274 is an apocalyptic number.

634641274 is a deficient number, since it is larger than the sum of its proper divisors (317320640).

634641274 is a wasteful number, since it uses less digits than its factorization.

634641274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317320639.

The product of its digits is 96768, while the sum is 37.

The square root of 634641274 is about 25192.0875276345. The cubic root of 634641274 is about 859.3619180713.

The spelling of 634641274 in words is "six hundred thirty-four million, six hundred forty-one thousand, two hundred seventy-four".