676638128 has 20 divisors (see below), whose sum is σ = 1317856128. Its totient is φ = 336546240.

The previous prime is 676638113. The next prime is 676638139. The reversal of 676638128 is 821836676.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107651 + ... + 113762.

Almost surely, 2^676638128 is an apocalyptic number.

It is an amenable number.

676638128 is a deficient number, since it is larger than the sum of its proper divisors (641218000).

676638128 is a wasteful number, since it uses less digits than its factorization.

676638128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221612 (or 221606 counting only the distinct ones).

The product of its digits is 580608, while the sum is 47.

The square root of 676638128 is about 26012.2687976270. The cubic root of 676638128 is about 877.9143652762.

The spelling of 676638128 in words is "six hundred seventy-six million, six hundred thirty-eight thousand, one hundred twenty-eight".