2205656 has 16 divisors (see below), whose sum is σ = 4206600. Its totient is φ = 1083904.

The previous prime is 2205649. The next prime is 2205659. The reversal of 2205656 is 6565022.

It is a happy number.

2205656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2205659) 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, 1865 + ... + 2808.

2^2205656 is an apocalyptic number.

It is an amenable number.

2205656 is a deficient number, since it is larger than the sum of its proper divisors (2000944).

2205656 is a wasteful number, since it uses less digits than its factorization.

2205656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4738 (or 4734 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 2205656 is about 1485.1451107552. The cubic root of 2205656 is about 130.1705060521.

The spelling of 2205656 in words is "two million, two hundred five thousand, six hundred fifty-six".