6856722068 has 48 divisors (see below), whose sum is σ = 14199494400. Its totient is φ = 2834630400.

The previous prime is 6856722053. The next prime is 6856722077. The reversal of 6856722068 is 8602276586.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1043393 + ... + 1049943.

It is an arithmetic number, because the mean of its divisors is an integer number (295822800).

Almost surely, 2^6856722068 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6856722068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7099747200).

6856722068 is an abundant number, since it is smaller than the sum of its proper divisors (7342772332).

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

6856722068 is a wasteful number, since it uses less digits than its factorization.

6856722068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7880 (or 7878 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 50.

The square root of 6856722068 is about 82805.3263262696. The cubic root of 6856722068 is about 1899.7896413463.

The spelling of 6856722068 in words is "six billion, eight hundred fifty-six million, seven hundred twenty-two thousand, sixty-eight".