2564564 has 12 divisors (see below), whose sum is σ = 4573044. Its totient is φ = 1257984.

The previous prime is 2564561. The next prime is 2564567. The reversal of 2564564 is 4654652.

2564564 = T₃₇ + T₃₈ + ... + T₂₄₈.

It is an interprime number because it is at equal distance from previous prime (2564561) and next prime (2564567).

It can be written as a sum of positive squares in 2 ways, for example, as 795664 + 1768900 = 892^2 + 1330^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2564564.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2564561) 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, 5837 + ... + 6260.

It is an arithmetic number, because the mean of its divisors is an integer number (381087).

2^2564564 is an apocalyptic number.

It is an amenable number.

2564564 is a deficient number, since it is larger than the sum of its proper divisors (2008480).

2564564 is a wasteful number, since it uses less digits than its factorization.

2564564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12154 (or 12152 counting only the distinct ones).

The product of its digits is 28800, while the sum is 32.

The square root of 2564564 is about 1601.4256148819. The cubic root of 2564564 is about 136.8793225771.

The spelling of 2564564 in words is "two million, five hundred sixty-four thousand, five hundred sixty-four".