2223666 has 16 divisors (see below), whose sum is σ = 4941600. Its totient is φ = 741204.

The previous prime is 2223631. The next prime is 2223671. The reversal of 2223666 is 6663222.

It is a happy number.

2223666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a plaindrome in base 10.

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 7 ways as a sum of consecutive naturals, for example, 20536 + ... + 20643.

It is an arithmetic number, because the mean of its divisors is an integer number (308850).

2^2223666 is an apocalyptic number.

2223666 is an abundant number, since it is smaller than the sum of its proper divisors (2717934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2223666 is a wasteful number, since it uses less digits than its factorization.

2223666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41190 (or 41184 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 2223666 is about 1491.1961641582. The cubic root of 2223666 is about 130.5238429153.

Adding to 2223666 its reverse (6663222), we get a palindrome (8886888).

The spelling of 2223666 in words is "two million, two hundred twenty-three thousand, six hundred sixty-six".