2638806 has 16 divisors (see below), whose sum is σ = 5320704. Its totient is φ = 872424.

The previous prime is 2638793. The next prime is 2638841. The reversal of 2638806 is 6088362.

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, 970 + ... + 2493.

It is an arithmetic number, because the mean of its divisors is an integer number (332544).

2^2638806 is an apocalyptic number.

2638806 is an abundant number, since it is smaller than the sum of its proper divisors (2681898).

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

2638806 is a wasteful number, since it uses less digits than its factorization.

2638806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3595.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 2638806 is about 1624.4402112728. The cubic root of 2638806 is about 138.1876254852.

The spelling of 2638806 in words is "two million, six hundred thirty-eight thousand, eight hundred six".