6662223 has 16 divisors (see below), whose sum is σ = 9922560. Its totient is φ = 4417848.

The previous prime is 6662209. The next prime is 6662231. The reversal of 6662223 is 3222666.

It is a happy number.

It is not a de Polignac number, because 6662223 - 2⁵ = 6662191 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6662233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5586 + ... + 6672.

It is an arithmetic number, because the mean of its divisors is an integer number (620160).

Almost surely, 2^6662223 is an apocalyptic number.

6662223 is a deficient number, since it is larger than the sum of its proper divisors (3260337).

6662223 is a wasteful number, since it uses less digits than its factorization.

6662223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1323 (or 1317 counting only the distinct ones).

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

The square root of 6662223 is about 2581.1282416804. The cubic root of 6662223 is about 188.1653799775.

Adding to 6662223 its reverse (3222666), we get a palindrome (9884889).

The spelling of 6662223 in words is "six million, six hundred sixty-two thousand, two hundred twenty-three".