2218885 has 4 divisors (see below), whose sum is σ = 2662668. Its totient is φ = 1775104.

The previous prime is 2218883. The next prime is 2218897. The reversal of 2218885 is 5888122.

It is a happy number.

2218885 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5888122 = 2 ⋅2944061.

It can be written as a sum of positive squares in 2 ways, for example, as 859329 + 1359556 = 927^2 + 1166^2 .

It is a cyclic number.

It is not a de Polignac number, because 2218885 - 2¹ = 2218883 is a prime.

It is a Duffinian number.

2218885 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2218885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2218883) 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, 221884 + ... + 221893.

It is an arithmetic number, because the mean of its divisors is an integer number (665667).

2^2218885 is an apocalyptic number.

It is an amenable number.

2218885 is a deficient number, since it is larger than the sum of its proper divisors (443783).

2218885 is an equidigital number, since it uses as much as digits as its factorization.

2218885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443782.

The product of its digits is 10240, while the sum is 34.

The square root of 2218885 is about 1489.5922260807. The cubic root of 2218885 is about 130.4302313951.

The spelling of 2218885 in words is "two million, two hundred eighteen thousand, eight hundred eighty-five".