2722689 has 12 divisors (see below), whose sum is σ = 3948516. Its totient is φ = 1807872.

The previous prime is 2722661. The next prime is 2722691. The reversal of 2722689 is 9862272.

It can be written as a sum of positive squares in 2 ways, for example, as 1912689 + 810000 = 1383^2 + 900^2 .

It is not a de Polignac number, because 2722689 - 2⁷ = 2722561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2722619) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2749 + ... + 3605.

It is an arithmetic number, because the mean of its divisors is an integer number (329043).

2^2722689 is an apocalyptic number.

It is an amenable number.

2722689 is a deficient number, since it is larger than the sum of its proper divisors (1225827).

2722689 is a wasteful number, since it uses less digits than its factorization.

2722689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1216 (or 1213 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 2722689 is about 1650.0572717333. The cubic root of 2722689 is about 139.6366256940.

The spelling of 2722689 in words is "two million, seven hundred twenty-two thousand, six hundred eighty-nine".