630712609 has 2 divisors, whose sum is σ = 630712610. Its totient is φ = 630712608.

The previous prime is 630712603. The next prime is 630712633. The reversal of 630712609 is 906217036.

630712609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 630261025 + 451584 = 25105^2 + 672^2 .

It is a cyclic number.

It is not a de Polignac number, because 630712609 - 2¹⁷ = 630581537 is a prime.

It is not a weakly prime, because it can be changed into another prime (630712603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315356304 + 315356305.

It is an arithmetic number, because the mean of its divisors is an integer number (315356305).

Almost surely, 2^630712609 is an apocalyptic number.

It is an amenable number.

630712609 is a deficient number, since it is larger than the sum of its proper divisors (1).

630712609 is an equidigital number, since it uses as much as digits as its factorization.

630712609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 630712609 is about 25113.9922951330. The cubic root of 630712609 is about 857.5849900036.

The spelling of 630712609 in words is "six hundred thirty million, seven hundred twelve thousand, six hundred nine".