634448858 has 4 divisors (see below), whose sum is σ = 951673290. Its totient is φ = 317224428.

The previous prime is 634448827. The next prime is 634448869. The reversal of 634448858 is 858844436.

It is a happy number.

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., 341251729 + 293197129 = 18473^2 + 17123^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158612213 + ... + 158612216.

Almost surely, 2^634448858 is an apocalyptic number.

634448858 is a deficient number, since it is larger than the sum of its proper divisors (317224432).

634448858 is a wasteful number, since it uses less digits than its factorization.

634448858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317224431.

The product of its digits is 2949120, while the sum is 50.

The square root of 634448858 is about 25188.2682612362. The cubic root of 634448858 is about 859.2750597133.

The spelling of 634448858 in words is "six hundred thirty-four million, four hundred forty-eight thousand, eight hundred fifty-eight".