663245003 has 4 divisors (see below), whose sum is σ = 663296568. Its totient is φ = 663193440.

The previous prime is 663244991. The next prime is 663245071. The reversal of 663245003 is 300542366.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 300542366 = 2 ⋅150271183.

It is a cyclic number.

It is not a de Polignac number, because 663245003 - 2²⁶ = 596136139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (663245203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11075 + ... + 38067.

It is an arithmetic number, because the mean of its divisors is an integer number (165824142).

Almost surely, 2^663245003 is an apocalyptic number.

663245003 is a deficient number, since it is larger than the sum of its proper divisors (51565).

663245003 is a wasteful number, since it uses less digits than its factorization.

663245003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51564.

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 663245003 is about 25753.5435037589. The cubic root of 663245003 is about 872.0833512300.

Adding to 663245003 its reverse (300542366), we get a palindrome (963787369).

The spelling of 663245003 in words is "six hundred sixty-three million, two hundred forty-five thousand, three".