2565604 has 24 divisors (see below), whose sum is σ = 4757760. Its totient is φ = 1208064.

The previous prime is 2565593. The next prime is 2565611. The reversal of 2565604 is 4065652.

2565604 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 7092 + ... + 7444.

It is an arithmetic number, because the mean of its divisors is an integer number (198240).

2^2565604 is an apocalyptic number.

It is an amenable number.

2565604 is a deficient number, since it is larger than the sum of its proper divisors (2192156).

2565604 is a wasteful number, since it uses less digits than its factorization.

2565604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459 (or 457 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 2565604 is about 1601.7502926486. The cubic root of 2565604 is about 136.8978228312.

The spelling of 2565604 in words is "two million, five hundred sixty-five thousand, six hundred four".