6664231 has 16 divisors (see below), whose sum is σ = 8121600. Its totient is φ = 5341248.

The previous prime is 6664223. The next prime is 6664237. The reversal of 6664231 is 1324666.

It is a cyclic number.

It is not a de Polignac number, because 6664231 - 2³ = 6664223 is a prime.

It is a super-2 number, since 2×6664231² = 88823949642722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6664231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6664237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11556 + ... + 12118.

It is an arithmetic number, because the mean of its divisors is an integer number (507600).

Almost surely, 2^6664231 is an apocalyptic number.

6664231 is a deficient number, since it is larger than the sum of its proper divisors (1457369).

6664231 is a wasteful number, since it uses less digits than its factorization.

6664231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678.

The product of its digits is 5184, while the sum is 28.

The square root of 6664231 is about 2581.5171895612. The cubic root of 6664231 is about 188.1842824834.

Adding to 6664231 its reverse (1324666), we get a palindrome (7988897).

The spelling of 6664231 in words is "six million, six hundred sixty-four thousand, two hundred thirty-one".