2688943 has 2 divisors, whose sum is σ = 2688944. Its totient is φ = 2688942.

The previous prime is 2688929. The next prime is 2688947. The reversal of 2688943 is 3498862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2688943 - 2²¹ = 591791 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2688896 and 2688905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2688947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1344471 + 1344472.

It is an arithmetic number, because the mean of its divisors is an integer number (1344472).

2^2688943 is an apocalyptic number.

2688943 is a deficient number, since it is larger than the sum of its proper divisors (1).

2688943 is an equidigital number, since it uses as much as digits as its factorization.

2688943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 40.

The square root of 2688943 is about 1639.7996828881. The cubic root of 2688943 is about 139.0573232850.

The spelling of 2688943 in words is "two million, six hundred eighty-eight thousand, nine hundred forty-three".