630515723 has 2 divisors, whose sum is σ = 630515724. Its totient is φ = 630515722.

The previous prime is 630515689. The next prime is 630515729. The reversal of 630515723 is 327515036.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 630515723 - 2⁶ = 630515659 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 630515723.

It is not a weakly prime, because it can be changed into another prime (630515729) 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 as a sum of consecutive naturals, namely, 315257861 + 315257862.

It is an arithmetic number, because the mean of its divisors is an integer number (315257862).

Almost surely, 2^630515723 is an apocalyptic number.

630515723 is a deficient number, since it is larger than the sum of its proper divisors (1).

630515723 is an equidigital number, since it uses as much as digits as its factorization.

630515723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18900, while the sum is 32.

The square root of 630515723 is about 25110.0721424690. The cubic root of 630515723 is about 857.4957448924.

The spelling of 630515723 in words is "six hundred thirty million, five hundred fifteen thousand, seven hundred twenty-three".