630646319 has 2 divisors, whose sum is σ = 630646320. Its totient is φ = 630646318.

The previous prime is 630646279. The next prime is 630646327. The reversal of 630646319 is 913646036.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 630646319 - 2⁸ = 630646063 is a prime.

It is a super-2 number, since 2×630646319² = 795429559336499522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (630646349) 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, 315323159 + 315323160.

It is an arithmetic number, because the mean of its divisors is an integer number (315323160).

Almost surely, 2^630646319 is an apocalyptic number.

630646319 is a deficient number, since it is larger than the sum of its proper divisors (1).

630646319 is an equidigital number, since it uses as much as digits as its factorization.

630646319 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 38.

The square root of 630646319 is about 25112.6724782529. The cubic root of 630646319 is about 857.5549439361.

It can be divided in two parts, 6306 and 46319, that added together give a palindrome (52625).

The spelling of 630646319 in words is "six hundred thirty million, six hundred forty-six thousand, three hundred nineteen".