2688011 has 4 divisors (see below), whose sum is σ = 2691552. Its totient is φ = 2684472.

The previous prime is 2687999. The next prime is 2688017. The reversal of 2688011 is 1108862.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1108862 = 2 ⋅554431.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2688011 is a prime.

It is a super-2 number, since 2×2688011² = 14450806272242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2688017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116 + ... + 2321.

It is an arithmetic number, because the mean of its divisors is an integer number (672888).

2^2688011 is an apocalyptic number.

2688011 is a deficient number, since it is larger than the sum of its proper divisors (3541).

2688011 is a wasteful number, since it uses less digits than its factorization.

2688011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3540.

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 2688011 is about 1639.5154772066. The cubic root of 2688011 is about 139.0412554594.

The spelling of 2688011 in words is "two million, six hundred eighty-eight thousand, eleven".