2645564 has 12 divisors (see below), whose sum is σ = 4643688. Its totient is φ = 1318800.

The previous prime is 2645561. The next prime is 2645567. The reversal of 2645564 is 4655462.

2645564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2645561) and next prime (2645567).

It is a self number, because there is not a number n which added to its sum of digits gives 2645564.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2645561) 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 in 3 ways as a sum of consecutive naturals, for example, 899 + ... + 2469.

It is an arithmetic number, because the mean of its divisors is an integer number (386974).

2^2645564 is an apocalyptic number.

It is an amenable number.

2645564 is a deficient number, since it is larger than the sum of its proper divisors (1998124).

2645564 is a wasteful number, since it uses less digits than its factorization.

2645564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996 (or 1994 counting only the distinct ones).

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

The square root of 2645564 is about 1626.5189823669. The cubic root of 2645564 is about 138.3054914048.

The spelling of 2645564 in words is "two million, six hundred forty-five thousand, five hundred sixty-four".