2815564 has 12 divisors (see below), whose sum is σ = 4939704. Its totient is φ = 1404224.

The previous prime is 2815559. The next prime is 2815573. The reversal of 2815564 is 4655182.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1779 + ... + 2965.

It is an arithmetic number, because the mean of its divisors is an integer number (411642).

2^2815564 is an apocalyptic number.

It is an amenable number.

2815564 is a deficient number, since it is larger than the sum of its proper divisors (2124140).

2815564 is a wasteful number, since it uses less digits than its factorization.

2815564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1784 (or 1782 counting only the distinct ones).

The product of its digits is 9600, while the sum is 31.

The square root of 2815564 is about 1677.9642427656. The cubic root of 2815564 is about 141.2066450072.

The spelling of 2815564 in words is "two million, eight hundred fifteen thousand, five hundred sixty-four".