2220806 has 32 divisors (see below), whose sum is σ = 4027968. Its totient is φ = 898560.

The previous prime is 2220787. The next prime is 2220839. The reversal of 2220806 is 6080222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30386 + ... + 30458.

It is an arithmetic number, because the mean of its divisors is an integer number (125874).

2^2220806 is an apocalyptic number.

2220806 is a deficient number, since it is larger than the sum of its proper divisors (1807162).

2220806 is a wasteful number, since it uses less digits than its factorization.

2220806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2220806 is about 1490.2368939199. The cubic root of 2220806 is about 130.4678605351.

The spelling of 2220806 in words is "two million, two hundred twenty thousand, eight hundred six".