680568041778 has 8 divisors (see below), whose sum is σ = 1361136083568. Its totient is φ = 226856013924.

The previous prime is 680568041773. The next prime is 680568041779. The reversal of 680568041778 is 877140865086.

It is a happy number.

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

680568041778 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (680568041773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56714003476 + ... + 56714003487.

It is an arithmetic number, because the mean of its divisors is an integer number (170142010446).

Almost surely, 2^680568041778 is an apocalyptic number.

680568041778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

680568041778 is a wasteful number, since it uses less digits than its factorization.

680568041778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113428006968.

The product of its (nonzero) digits is 18063360, while the sum is 60.

The spelling of 680568041778 in words is "six hundred eighty billion, five hundred sixty-eight million, forty-one thousand, seven hundred seventy-eight".