688340043886 has 16 divisors (see below), whose sum is σ = 1126927105920. Its totient is φ = 312728369080.

The previous prime is 688340043877. The next prime is 688340043893.

688340043886 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 688340043886.

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, 7627576 + ... + 7717291.

It is an arithmetic number, because the mean of its divisors is an integer number (70432944120).

Almost surely, 2^688340043886 is an apocalyptic number.

688340043886 is a deficient number, since it is larger than the sum of its proper divisors (438587062034).

688340043886 is a wasteful number, since it uses less digits than its factorization.

688340043886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15346919.

The product of its (nonzero) digits is 21233664, while the sum is 58.

The spelling of 688340043886 in words is "six hundred eighty-eight billion, three hundred forty million, forty-three thousand, eight hundred eighty-six".