2668686 has 16 divisors (see below), whose sum is σ = 5373264. Its totient is φ = 883584.

The previous prime is 2668669. The next prime is 2668693. The reversal of 2668686 is 6868662.

It is a d-powerful number, because it can be written as 2¹⁹ + 6 + 6² + 8³ + 6² + 8⁷ + 6⁶ .

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 475 + ... + 2358.

It is an arithmetic number, because the mean of its divisors is an integer number (335829).

2^2668686 is an apocalyptic number.

2668686 is an abundant number, since it is smaller than the sum of its proper divisors (2704578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2668686 is a wasteful number, since it uses less digits than its factorization.

2668686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2995.

The product of its digits is 165888, while the sum is 42.

The square root of 2668686 is about 1633.6113368852. The cubic root of 2668686 is about 138.7072492268.

The spelling of 2668686 in words is "two million, six hundred sixty-eight thousand, six hundred eighty-six".