2006564 has 12 divisors (see below), whose sum is σ = 4013184. Its totient is φ = 859944.

The previous prime is 2006549. The next prime is 2006573. The reversal of 2006564 is 4656002.

2006564 is an admirable number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 35804 + ... + 35859.

It is an arithmetic number, because the mean of its divisors is an integer number (334432).

2^2006564 is an apocalyptic number.

It is an amenable number.

2006564 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2006564 is a wasteful number, since it uses less digits than its factorization.

2006564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71674 (or 71672 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 2006564 is about 1416.5323857929. The cubic root of 2006564 is about 126.1297898348.

The spelling of 2006564 in words is "two million, six thousand, five hundred sixty-four".