688886734882 has 8 divisors (see below), whose sum is σ = 1050269940252. Its totient is φ = 338796754800.

The previous prime is 688886734871. The next prime is 688886734883. The reversal of 688886734882 is 288437688886.

It can be written as a sum of positive squares in 2 ways, for example, as 438245324001 + 250641410881 = 662001^2 + 500641^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 688886734799 and 688886734808.

It is not an unprimeable number, because it can be changed into a prime (688886734883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2823306169 + ... + 2823306412.

Almost surely, 2^688886734882 is an apocalyptic number.

688886734882 is a deficient number, since it is larger than the sum of its proper divisors (361383205370).

688886734882 is a wasteful number, since it uses less digits than its factorization.

688886734882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5646612644.

The product of its digits is 1585446912, while the sum is 76.

The spelling of 688886734882 in words is "six hundred eighty-eight billion, eight hundred eighty-six million, seven hundred thirty-four thousand, eight hundred eighty-two".