630759617 has 2 divisors, whose sum is σ = 630759618. Its totient is φ = 630759616.

The previous prime is 630759601. The next prime is 630759637. The reversal of 630759617 is 716957036.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 607178881 + 23580736 = 24641^2 + 4856^2 .

It is a cyclic number.

It is not a de Polignac number, because 630759617 - 2⁴ = 630759601 is a prime.

It is not a weakly prime, because it can be changed into another prime (630759637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315379808 + 315379809.

It is an arithmetic number, because the mean of its divisors is an integer number (315379809).

Almost surely, 2^630759617 is an apocalyptic number.

It is an amenable number.

630759617 is a deficient number, since it is larger than the sum of its proper divisors (1).

630759617 is an equidigital number, since it uses as much as digits as its factorization.

630759617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 238140, while the sum is 44.

The square root of 630759617 is about 25114.9281703134. The cubic root of 630759617 is about 857.6062951924.

The spelling of 630759617 in words is "six hundred thirty million, seven hundred fifty-nine thousand, six hundred seventeen".