2688239 has 2 divisors, whose sum is σ = 2688240. Its totient is φ = 2688238.

The previous prime is 2688233. The next prime is 2688299. The reversal of 2688239 is 9328862.

It is a happy number.

2688239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2688239 - 2⁴ = 2688223 is a prime.

It is a super-2 number, since 2×2688239² = 14453257842242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2688233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1344119 + 1344120.

It is an arithmetic number, because the mean of its divisors is an integer number (1344120).

2^2688239 is an apocalyptic number.

2688239 is a deficient number, since it is larger than the sum of its proper divisors (1).

2688239 is an equidigital number, since it uses as much as digits as its factorization.

2688239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 38.

The square root of 2688239 is about 1639.5850084701. The cubic root of 2688239 is about 139.0451865581.

The spelling of 2688239 in words is "two million, six hundred eighty-eight thousand, two hundred thirty-nine".