664223233 has 8 divisors (see below), whose sum is σ = 695984256. Its totient is φ = 632702400.

The previous prime is 664223227. The next prime is 664223237. The reversal of 664223233 is 332322466.

664223233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 664223233 - 2⁹ = 664222721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 664223195 and 664223204.

It is not an unprimeable number, because it can be changed into a prime (664223237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54373 + ... + 65458.

It is an arithmetic number, because the mean of its divisors is an integer number (86998032).

Almost surely, 2^664223233 is an apocalyptic number.

It is an amenable number.

664223233 is a deficient number, since it is larger than the sum of its proper divisors (31761023).

664223233 is a wasteful number, since it uses less digits than its factorization.

664223233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120095.

The product of its digits is 31104, while the sum is 31.

The square root of 664223233 is about 25772.5286497076. The cubic root of 664223233 is about 872.5118902165.

Adding to 664223233 its reverse (332322466), we get a palindrome (996545699).

The spelling of 664223233 in words is "six hundred sixty-four million, two hundred twenty-three thousand, two hundred thirty-three".