8722688 has 36 divisors (see below), whose sum is σ = 18757788. Its totient is φ = 4024320.

The previous prime is 8722673. The next prime is 8722711. The reversal of 8722688 is 8862278.

It can be written as a sum of positive squares in 2 ways, for example, as 4194304 + 4528384 = 2048^2 + 2128^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2018 + ... + 4638.

Almost surely, 2^8722688 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 8722688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9378894).

8722688 is an abundant number, since it is smaller than the sum of its proper divisors (10035100).

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

8722688 is a wasteful number, since it uses less digits than its factorization.

8722688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2650 (or 2636 counting only the distinct ones).

The product of its digits is 86016, while the sum is 41.

The square root of 8722688 is about 2953.4197128075. The cubic root of 8722688 is about 205.8496404913.

The spelling of 8722688 in words is "eight million, seven hundred twenty-two thousand, six hundred eighty-eight".