630665203 has 4 divisors (see below), whose sum is σ = 720760240. Its totient is φ = 540570168.

The previous prime is 630665197. The next prime is 630665207. The reversal of 630665203 is 302566036.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 630665203 - 2²⁹ = 93794291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (630665207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45047508 + ... + 45047521.

It is an arithmetic number, because the mean of its divisors is an integer number (180190060).

Almost surely, 2^630665203 is an apocalyptic number.

630665203 is a deficient number, since it is larger than the sum of its proper divisors (90095037).

630665203 is an equidigital number, since it uses as much as digits as its factorization.

630665203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90095036.

The product of its (nonzero) digits is 19440, while the sum is 31.

The square root of 630665203 is about 25113.0484609097. The cubic root of 630665203 is about 857.5635033592.

The spelling of 630665203 in words is "six hundred thirty million, six hundred sixty-five thousand, two hundred three".