2216636 has 12 divisors (see below), whose sum is σ = 3892728. Its totient is φ = 1104432.

The previous prime is 2216629. The next prime is 2216653. The reversal of 2216636 is 6366122.

2216636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a d-powerful number, because it can be written as 2⁹ + 2¹⁵ + 1 + 6⁶ + 6⁷ + 3¹¹ + 6⁸ .

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 590 + ... + 2186.

It is an arithmetic number, because the mean of its divisors is an integer number (324394).

2^2216636 is an apocalyptic number.

It is an amenable number.

2216636 is a deficient number, since it is larger than the sum of its proper divisors (1676092).

2216636 is a wasteful number, since it uses less digits than its factorization.

2216636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1948 (or 1946 counting only the distinct ones).

The product of its digits is 2592, while the sum is 26.

The square root of 2216636 is about 1488.8371301120. The cubic root of 2216636 is about 130.3861496826.

The spelling of 2216636 in words is "two million, two hundred sixteen thousand, six hundred thirty-six".