2213655 has 16 divisors (see below), whose sum is σ = 3750624. Its totient is φ = 1111040.

The previous prime is 2213647. The next prime is 2213677. The reversal of 2213655 is 5563122.

2213655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2213655 - 2³ = 2213647 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 4086 + ... + 4595.

It is an arithmetic number, because the mean of its divisors is an integer number (234414).

2^2213655 is an apocalyptic number.

2213655 is a deficient number, since it is larger than the sum of its proper divisors (1536969).

2213655 is a wasteful number, since it uses less digits than its factorization.

2213655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8706.

The product of its digits is 1800, while the sum is 24.

The square root of 2213655 is about 1487.8356764105. The cubic root of 2213655 is about 130.3276743654.

Adding to 2213655 its reverse (5563122), we get a palindrome (7776777).

The spelling of 2213655 in words is "two million, two hundred thirteen thousand, six hundred fifty-five".