2688722 has 8 divisors (see below), whose sum is σ = 4069116. Its totient is φ = 1332352.

The previous prime is 2688701. The next prime is 2688731. The reversal of 2688722 is 2278862.

It can be written as a sum of positive squares in 2 ways, for example, as 2686321 + 2401 = 1639^2 + 49^2 .

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

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, 5723 + ... + 6174.

2^2688722 is an apocalyptic number.

2688722 is a deficient number, since it is larger than the sum of its proper divisors (1380394).

2688722 is a wasteful number, since it uses less digits than its factorization.

2688722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12012.

The product of its digits is 21504, while the sum is 35.

The square root of 2688722 is about 1639.7322952238. The cubic root of 2688722 is about 139.0535135463.

The spelling of 2688722 in words is "two million, six hundred eighty-eight thousand, seven hundred twenty-two".