2567564 has 6 divisors (see below), whose sum is σ = 4493244. Its totient is φ = 1283780.

The previous prime is 2567557. The next prime is 2567569. The reversal of 2567564 is 4657652.

2567564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2567569) 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 as a sum of consecutive naturals, namely, 320942 + ... + 320949.

It is an arithmetic number, because the mean of its divisors is an integer number (748874).

2^2567564 is an apocalyptic number.

It is an amenable number.

2567564 is a deficient number, since it is larger than the sum of its proper divisors (1925680).

2567564 is a wasteful number, since it uses less digits than its factorization.

2567564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641895 (or 641893 counting only the distinct ones).

The product of its digits is 50400, while the sum is 35.

The square root of 2567564 is about 1602.3620065391. The cubic root of 2567564 is about 136.9326751095.

The spelling of 2567564 in words is "two million, five hundred sixty-seven thousand, five hundred sixty-four".