6719720256 has 112 divisors (see below), whose sum is σ = 20236769280. Its totient is φ = 2185251840.

The previous prime is 6719720251. The next prime is 6719720279. The reversal of 6719720256 is 6520279176.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6719720251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23425 + ... + 118271.

It is an arithmetic number, because the mean of its divisors is an integer number (180685440).

Almost surely, 2^6719720256 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 6719720256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10118384640).

6719720256 is an abundant number, since it is smaller than the sum of its proper divisors (13517049024).

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

6719720256 is a wasteful number, since it uses less digits than its factorization.

6719720256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94909 (or 94893 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 6719720256 is about 81973.8998462315. The cubic root of 6719720256 is about 1887.0514063151.

The spelling of 6719720256 in words is "six billion, seven hundred nineteen million, seven hundred twenty thousand, two hundred fifty-six".