688777736056 has 128 divisors (see below), whose sum is σ = 1381347302400. Its totient is φ = 321508293120.

The previous prime is 688777736051. The next prime is 688777736063. The reversal of 688777736056 is 650637777886.

688777736056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688777736051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 294474135 + ... + 294476473.

It is an arithmetic number, because the mean of its divisors is an integer number (10791775800).

Almost surely, 2^688777736056 is an apocalyptic number.

It is an amenable number.

688777736056 is an abundant number, since it is smaller than the sum of its proper divisors (692569566344).

688777736056 is a wasteful number, since it uses less digits than its factorization.

688777736056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2837 (or 2833 counting only the distinct ones).

The product of its (nonzero) digits is 497871360, while the sum is 70.

The spelling of 688777736056 in words is "six hundred eighty-eight billion, seven hundred seventy-seven million, seven hundred thirty-six thousand, fifty-six".