2668806 has 48 divisors (see below), whose sum is σ = 6739200. Its totient is φ = 747504.

The previous prime is 2668793. The next prime is 2668829. The reversal of 2668806 is 6088662.

2668806 = 183² + 184² + ... + 241².

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7255 + ... + 7613.

It is an arithmetic number, because the mean of its divisors is an integer number (140400).

2^2668806 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2668806, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3369600).

2668806 is an abundant number, since it is smaller than the sum of its proper divisors (4070394).

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

2668806 is a wasteful number, since it uses less digits than its factorization.

2668806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433 (or 430 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 2668806 is about 1633.6480649148. The cubic root of 2668806 is about 138.7093282300.

The spelling of 2668806 in words is "two million, six hundred sixty-eight thousand, eight hundred six".