6604223 has 4 divisors (see below), whose sum is σ = 6615168. Its totient is φ = 6593280.

The previous prime is 6604217. The next prime is 6604231. The reversal of 6604223 is 3224066.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3224066 = 2 ⋅1612033.

It is a cyclic number.

It is not a de Polignac number, because 6604223 - 2¹⁸ = 6342079 is a prime.

It is a super-2 number, since 2×6604223² = 87231522867458, which contains 22 as substring.

It is a d-powerful number, because it can be written as 6² + 6⁷ + 0 + 4¹¹ + 2¹⁵ + 2²¹ + 3³ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6601223) 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, 4511 + ... + 5792.

It is an arithmetic number, because the mean of its divisors is an integer number (1653792).

Almost surely, 2^6604223 is an apocalyptic number.

6604223 is a deficient number, since it is larger than the sum of its proper divisors (10945).

6604223 is a wasteful number, since it uses less digits than its factorization.

6604223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10944.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 6604223 is about 2569.8682845625. The cubic root of 6604223 is about 187.6177441190.

Adding to 6604223 its reverse (3224066), we get a palindrome (9828289).

The spelling of 6604223 in words is "six million, six hundred four thousand, two hundred twenty-three".