630708613 has 2 divisors, whose sum is σ = 630708614. Its totient is φ = 630708612.

The previous prime is 630708601. The next prime is 630708703. The reversal of 630708613 is 316807036.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 557998884 + 72709729 = 23622^2 + 8527^2 .

It is a cyclic number.

It is not a de Polignac number, because 630708613 - 2⁵ = 630708581 is a prime.

It is equal to p_32842195 and since 630708613 and 32842195 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (630708713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315354306 + 315354307.

It is an arithmetic number, because the mean of its divisors is an integer number (315354307).

Almost surely, 2^630708613 is an apocalyptic number.

It is an amenable number.

630708613 is a deficient number, since it is larger than the sum of its proper divisors (1).

630708613 is an equidigital number, since it uses as much as digits as its factorization.

630708613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 630708613 is about 25113.9127377635. The cubic root of 630708613 is about 857.5831788687.

The spelling of 630708613 in words is "six hundred thirty million, seven hundred eight thousand, six hundred thirteen".