2820566 has 32 divisors (see below), whose sum is σ = 5117952. Its totient is φ = 1140480.

The previous prime is 2820563. The next prime is 2820619. The reversal of 2820566 is 6650282.

2820566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2820563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29030 + ... + 29126.

It is an arithmetic number, because the mean of its divisors is an integer number (159936).

2^2820566 is an apocalyptic number.

2820566 is a deficient number, since it is larger than the sum of its proper divisors (2297386).

2820566 is a wasteful number, since it uses less digits than its factorization.

2820566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 2820566 is about 1679.4540779670. The cubic root of 2820566 is about 141.2902159224.

The spelling of 2820566 in words is "two million, eight hundred twenty thousand, five hundred sixty-six".