663972203 has 2 divisors, whose sum is σ = 663972204. Its totient is φ = 663972202.

The previous prime is 663972143. The next prime is 663972209. The reversal of 663972203 is 302279366.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 663972203 - 2⁸ = 663971947 is a prime.

It is not a weakly prime, because it can be changed into another prime (663972209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331986101 + 331986102.

It is an arithmetic number, because the mean of its divisors is an integer number (331986102).

Almost surely, 2^663972203 is an apocalyptic number.

663972203 is a deficient number, since it is larger than the sum of its proper divisors (1).

663972203 is an equidigital number, since it uses as much as digits as its factorization.

663972203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 38.

The square root of 663972203 is about 25767.6580814012. The cubic root of 663972203 is about 872.4019601775.

The spelling of 663972203 in words is "six hundred sixty-three million, nine hundred seventy-two thousand, two hundred three".