630623663 has 2 divisors, whose sum is σ = 630623664. Its totient is φ = 630623662.

The previous prime is 630623641. The next prime is 630623701. The reversal of 630623663 is 366326036.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 630623663 - 2⁶ = 630623599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (650623663) 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, 315311831 + 315311832.

It is an arithmetic number, because the mean of its divisors is an integer number (315311832).

Almost surely, 2^630623663 is an apocalyptic number.

630623663 is a deficient number, since it is larger than the sum of its proper divisors (1).

630623663 is an equidigital number, since it uses as much as digits as its factorization.

630623663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 35.

The square root of 630623663 is about 25112.2213872051. The cubic root of 630623663 is about 857.5446745786.

Adding to 630623663 its reverse (366326036), we get a palindrome (996949699).

The spelling of 630623663 in words is "six hundred thirty million, six hundred twenty-three thousand, six hundred sixty-three".