634742146 has 4 divisors (see below), whose sum is σ = 952113222. Its totient is φ = 317371072.

The previous prime is 634742123. The next prime is 634742179. The reversal of 634742146 is 641247436.

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., 616975921 + 17766225 = 24839^2 + 4215^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158685535 + ... + 158685538.

Almost surely, 2^634742146 is an apocalyptic number.

634742146 is a deficient number, since it is larger than the sum of its proper divisors (317371076).

634742146 is a wasteful number, since it uses less digits than its factorization.

634742146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317371075.

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

The square root of 634742146 is about 25194.0895052788. The cubic root of 634742146 is about 859.4074456087.

The spelling of 634742146 in words is "six hundred thirty-four million, seven hundred forty-two thousand, one hundred forty-six".