2066564 has 12 divisors (see below), whose sum is σ = 3704988. Its totient is φ = 1008000.

The previous prime is 2066563. The next prime is 2066579. The reversal of 2066564 is 4656602.

It can be written as a sum of positive squares in 2 ways, for example, as 350464 + 1716100 = 592^2 + 1310^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2066563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6137 + ... + 6464.

It is an arithmetic number, because the mean of its divisors is an integer number (308749).

2^2066564 is an apocalyptic number.

It is an amenable number.

2066564 is a deficient number, since it is larger than the sum of its proper divisors (1638424).

2066564 is a wasteful number, since it uses less digits than its factorization.

2066564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12646 (or 12644 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 2066564 is about 1437.5548685181. The cubic root of 2066564 is about 127.3746352013.

The spelling of 2066564 in words is "two million, sixty-six thousand, five hundred sixty-four".