6630223 has 2 divisors, whose sum is σ = 6630224. Its totient is φ = 6630222.

The previous prime is 6630203. The next prime is 6630227. The reversal of 6630223 is 3220366.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6630223 - 2⁵ = 6630191 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 6630194 and 6630203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6630227) 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 as a sum of consecutive naturals, namely, 3315111 + 3315112.

It is an arithmetic number, because the mean of its divisors is an integer number (3315112).

Almost surely, 2^6630223 is an apocalyptic number.

6630223 is a deficient number, since it is larger than the sum of its proper divisors (1).

6630223 is an equidigital number, since it uses as much as digits as its factorization.

6630223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 6630223 is about 2574.9219405644. The cubic root of 6630223 is about 187.8636309236.

Adding to 6630223 its reverse (3220366), we get a palindrome (9850589).

The spelling of 6630223 in words is "six million, six hundred thirty thousand, two hundred twenty-three".