628008686868 has 24 divisors (see below), whose sum is σ = 1529064629568. Its totient is φ = 200234653696.

The previous prime is 628008686827. The next prime is 628008686911. The reversal of 628008686868 is 868686800826.

It is a junction number, because it is equal to n+sod(n) for n = 628008686799 and 628008686808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1137696621 + ... + 1137697172.

It is an arithmetic number, because the mean of its divisors is an integer number (63711026232).

Almost surely, 2^628008686868 is an apocalyptic number.

It is an amenable number.

628008686868 is an abundant number, since it is smaller than the sum of its proper divisors (901055942700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

628008686868 is a wasteful number, since it uses less digits than its factorization.

628008686868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2275393823 (or 2275393821 counting only the distinct ones).

The product of its (nonzero) digits is 84934656, while the sum is 66.

The spelling of 628008686868 in words is "six hundred twenty-eight billion, eight million, six hundred eighty-six thousand, eight hundred sixty-eight".