630015863 has 2 divisors, whose sum is σ = 630015864. Its totient is φ = 630015862.

The previous prime is 630015853. The next prime is 630015887. The reversal of 630015863 is 368510036.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 630015863 - 2¹⁰ = 630014839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (630015853) 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, 315007931 + 315007932.

It is an arithmetic number, because the mean of its divisors is an integer number (315007932).

Almost surely, 2^630015863 is an apocalyptic number.

630015863 is a deficient number, since it is larger than the sum of its proper divisors (1).

630015863 is an equidigital number, since it uses as much as digits as its factorization.

630015863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 630015863 is about 25100.1167925570. The cubic root of 630015863 is about 857.2690832743.

Adding to 630015863 its reverse (368510036), we get a palindrome (998525899).

The spelling of 630015863 in words is "six hundred thirty million, fifteen thousand, eight hundred sixty-three".