630801001 has 2 divisors, whose sum is σ = 630801002. Its totient is φ = 630801000.

The previous prime is 630800987. The next prime is 630801023. The reversal of 630801001 is 100108036.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 340439401 + 290361600 = 18451^2 + 17040^2 .

It is a cyclic number.

It is not a de Polignac number, because 630801001 - 2¹¹ = 630798953 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 630801001.

It is not a weakly prime, because it can be changed into another prime (630802001) 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, 315400500 + 315400501.

It is an arithmetic number, because the mean of its divisors is an integer number (315400501).

Almost surely, 2^630801001 is an apocalyptic number.

It is an amenable number.

630801001 is a deficient number, since it is larger than the sum of its proper divisors (1).

630801001 is an equidigital number, since it uses as much as digits as its factorization.

630801001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 630801001 is about 25115.7520492618. The cubic root of 630801001 is about 857.6250505692.

Adding to 630801001 its reverse (100108036), we get a palindrome (730909037).

The spelling of 630801001 in words is "six hundred thirty million, eight hundred one thousand, one".