688815714036 has 12 divisors (see below), whose sum is σ = 1607236666112. Its totient is φ = 229605238008.

The previous prime is 688815714007. The next prime is 688815714047. The reversal of 688815714036 is 630417518886.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 28700654740 + ... + 28700654763.

Almost surely, 2^688815714036 is an apocalyptic number.

It is an amenable number.

688815714036 is an abundant number, since it is smaller than the sum of its proper divisors (918420952076).

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

688815714036 is a wasteful number, since it uses less digits than its factorization.

688815714036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57401309510 (or 57401309508 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 57.

The spelling of 688815714036 in words is "six hundred eighty-eight billion, eight hundred fifteen million, seven hundred fourteen thousand, thirty-six".