664303233 has 16 divisors (see below), whose sum is σ = 967792896. Its totient is φ = 401969040.

The previous prime is 664303207. The next prime is 664303253. The reversal of 664303233 is 332303466.

It is not a de Polignac number, because 664303233 - 2¹³ = 664295041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 664303233.

It is not an unprimeable number, because it can be changed into a prime (664303253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5566 + ... + 36872.

It is an arithmetic number, because the mean of its divisors is an integer number (60487056).

Almost surely, 2^664303233 is an apocalyptic number.

It is an amenable number.

664303233 is a deficient number, since it is larger than the sum of its proper divisors (303489663).

664303233 is a wasteful number, since it uses less digits than its factorization.

664303233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31964.

The product of its (nonzero) digits is 23328, while the sum is 30.

The square root of 664303233 is about 25774.0806431578. The cubic root of 664303233 is about 872.5469176720.

Adding to 664303233 its reverse (332303466), we get a palindrome (996606699).

The spelling of 664303233 in words is "six hundred sixty-four million, three hundred three thousand, two hundred thirty-three".