627988720868 has 12 divisors (see below), whose sum is σ = 1099091822892. Its totient is φ = 313962485760.

The previous prime is 627988720837. The next prime is 627988720871. The reversal of 627988720868 is 868027889726.

It can be written as a sum of positive squares in 2 ways, for example, as 473993694784 + 153995026084 = 688472^2 + 392422^2 .

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 in 3 ways as a sum of consecutive naturals, for example, 7924313 + ... + 8003168.

It is an arithmetic number, because the mean of its divisors is an integer number (91590985241).

Almost surely, 2^627988720868 is an apocalyptic number.

It is an amenable number.

627988720868 is a deficient number, since it is larger than the sum of its proper divisors (471103102024).

627988720868 is a wasteful number, since it uses less digits than its factorization.

627988720868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15937342 (or 15937340 counting only the distinct ones).

The product of its (nonzero) digits is 260112384, while the sum is 71.

The spelling of 627988720868 in words is "six hundred twenty-seven billion, nine hundred eighty-eight million, seven hundred twenty thousand, eight hundred sixty-eight".