2688929 has 2 divisors, whose sum is σ = 2688930. Its totient is φ = 2688928.

The previous prime is 2688913. The next prime is 2688943. The reversal of 2688929 is 9298862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1537600 + 1151329 = 1240^2 + 1073^2 .

It is a cyclic number.

It is not a de Polignac number, because 2688929 - 2⁴ = 2688913 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2688929.

It is not a weakly prime, because it can be changed into another prime (2688949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1344464 + 1344465.

It is an arithmetic number, because the mean of its divisors is an integer number (1344465).

2^2688929 is an apocalyptic number.

It is an amenable number.

2688929 is a deficient number, since it is larger than the sum of its proper divisors (1).

2688929 is an equidigital number, since it uses as much as digits as its factorization.

2688929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 44.

The square root of 2688929 is about 1639.7954140685. The cubic root of 2688929 is about 139.0570819503.

The spelling of 2688929 in words is "two million, six hundred eighty-eight thousand, nine hundred twenty-nine".