6663223 has 8 divisors (see below), whose sum is σ = 7630848. Its totient is φ = 5699544.

The previous prime is 6663203. The next prime is 6663227. The reversal of 6663223 is 3223666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6663223 - 2⁵ = 6663191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6663191 and 6663200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6663227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5490 + ... + 6592.

It is an arithmetic number, because the mean of its divisors is an integer number (953856).

Almost surely, 2^6663223 is an apocalyptic number.

6663223 is a deficient number, since it is larger than the sum of its proper divisors (967625).

6663223 is a wasteful number, since it uses less digits than its factorization.

6663223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1973.

The product of its digits is 7776, while the sum is 28.

The square root of 6663223 is about 2581.3219481498. The cubic root of 6663223 is about 188.1747940508.

Adding to 6663223 its reverse (3223666), we get a palindrome (9886889).

It can be divided in two parts, 6663 and 223, that added together give a palindrome (6886).

The spelling of 6663223 in words is "six million, six hundred sixty-three thousand, two hundred twenty-three".