680969788726 has 8 divisors (see below), whose sum is σ = 1021459635144. Its totient is φ = 340483243680.

The previous prime is 680969788721. The next prime is 680969788729. The reversal of 680969788726 is 627887969086.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680969788721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221235 + ... + 1187806.

It is an arithmetic number, because the mean of its divisors is an integer number (127682454393).

Almost surely, 2^680969788726 is an apocalyptic number.

680969788726 is a deficient number, since it is larger than the sum of its proper divisors (340489846418).

680969788726 is a wasteful number, since it uses less digits than its factorization.

680969788726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650686.

The product of its (nonzero) digits is 877879296, while the sum is 76.

The spelling of 680969788726 in words is "six hundred eighty billion, nine hundred sixty-nine million, seven hundred eighty-eight thousand, seven hundred twenty-six".