2223664 has 20 divisors (see below), whose sum is σ = 4401504. Its totient is φ = 1087808.

The previous prime is 2223631. The next prime is 2223671. The reversal of 2223664 is 4663222.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 727 + ... + 2230.

2^2223664 is an apocalyptic number.

It is an amenable number.

2223664 is a deficient number, since it is larger than the sum of its proper divisors (2177840).

2223664 is a wasteful number, since it uses less digits than its factorization.

2223664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3012 (or 3006 counting only the distinct ones).

The product of its digits is 3456, while the sum is 25.

The square root of 2223664 is about 1491.1954935554. The cubic root of 2223664 is about 130.5238037836.

Adding to 2223664 its reverse (4663222), we get a palindrome (6886886).

The spelling of 2223664 in words is "two million, two hundred twenty-three thousand, six hundred sixty-four".