2223643 has 4 divisors (see below), whose sum is σ = 2241280. Its totient is φ = 2206008.

The previous prime is 2223631. The next prime is 2223671. The reversal of 2223643 is 3463222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2223643 - 2²¹ = 126491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2223623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8628 + ... + 8881.

It is an arithmetic number, because the mean of its divisors is an integer number (560320).

2^2223643 is an apocalyptic number.

2223643 is a deficient number, since it is larger than the sum of its proper divisors (17637).

2223643 is a wasteful number, since it uses less digits than its factorization.

2223643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17636.

The product of its digits is 1728, while the sum is 22.

The square root of 2223643 is about 1491.1884522085. The cubic root of 2223643 is about 130.5233928989.

Adding to 2223643 its reverse (3463222), we get a palindrome (5686865).

The spelling of 2223643 in words is "two million, two hundred twenty-three thousand, six hundred forty-three".