664030503 has 12 divisors (see below), whose sum is σ = 965509168. Its totient is φ = 439754400.

The previous prime is 664030483. The next prime is 664030511. The reversal of 664030503 is 305030466.

664030503 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 664030503 - 2⁹ = 664029991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664030573) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 242950 + ... + 245667.

Almost surely, 2^664030503 is an apocalyptic number.

664030503 is a deficient number, since it is larger than the sum of its proper divisors (301478665).

664030503 is a wasteful number, since it uses less digits than its factorization.

664030503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488774 (or 488771 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 664030503 is about 25768.7893196401. The cubic root of 664030503 is about 872.4274931468.

Adding to 664030503 its reverse (305030466), we get a palindrome (969060969).

The spelling of 664030503 in words is "six hundred sixty-four million, thirty thousand, five hundred three".