2688316722 has 128 divisors (see below), whose sum is σ = 7403397120. Its totient is φ = 704116800.

The previous prime is 2688316717. The next prime is 2688316781. The reversal of 2688316722 is 2276138862.

2688316722 is a `hidden beast` number, since 268 + 8 + 316 + 72 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 740203 + ... + 743825.

It is an arithmetic number, because the mean of its divisors is an integer number (57839040).

Almost surely, 2^2688316722 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2688316722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3701698560).

2688316722 is an abundant number, since it is smaller than the sum of its proper divisors (4715080398).

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

2688316722 is a wasteful number, since it uses less digits than its factorization.

2688316722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3805 (or 3799 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 2688316722 is about 51848.9799513935. The cubic root of 2688316722 is about 1390.4652656368.

The spelling of 2688316722 in words is "two billion, six hundred eighty-eight million, three hundred sixteen thousand, seven hundred twenty-two".