2688813 has 6 divisors (see below), whose sum is σ = 3883854. Its totient is φ = 1792536.

The previous prime is 2688811. The next prime is 2688817. The reversal of 2688813 is 3188862.

It can be written as a sum of positive squares in only one way, i.e., 2350089 + 338724 = 1533^2 + 582^2 .

It is not a de Polignac number, because 2688813 - 2¹ = 2688811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2688811) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 149370 + ... + 149387.

It is an arithmetic number, because the mean of its divisors is an integer number (647309).

2^2688813 is an apocalyptic number.

It is an amenable number.

2688813 is a deficient number, since it is larger than the sum of its proper divisors (1195041).

2688813 is a wasteful number, since it uses less digits than its factorization.

2688813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298763 (or 298760 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 2688813 is about 1639.7600434210. The cubic root of 2688813 is about 139.0550822875.

The spelling of 2688813 in words is "two million, six hundred eighty-eight thousand, eight hundred thirteen".