688788846860 has 96 divisors (see below), whose sum is σ = 1534312378368. Its totient is φ = 259279453440.

The previous prime is 688788846857. The next prime is 688788846883. The reversal of 688788846860 is 68648887886.

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 in 31 ways as a sum of consecutive naturals, for example, 47868587 + ... + 47882973.

It is an arithmetic number, because the mean of its divisors is an integer number (15982420608).

Almost surely, 2^688788846860 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 688788846860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (767156189184).

688788846860 is an abundant number, since it is smaller than the sum of its proper divisors (845523531508).

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

688788846860 is a wasteful number, since it uses less digits than its factorization.

688788846860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16551 (or 16549 counting only the distinct ones).

The product of its (nonzero) digits is 1585446912, while the sum is 77.

The spelling of 688788846860 in words is "six hundred eighty-eight billion, seven hundred eighty-eight million, eight hundred forty-six thousand, eight hundred sixty".