663246013 has 2 divisors, whose sum is σ = 663246014. Its totient is φ = 663246012.

The previous prime is 663245981. The next prime is 663246049. The reversal of 663246013 is 310642366.

663246013 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., 657307044 + 5938969 = 25638^2 + 2437^2 .

It is a cyclic number.

It is not a de Polignac number, because 663246013 - 2⁵ = 663245981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (663246113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331623006 + 331623007.

It is an arithmetic number, because the mean of its divisors is an integer number (331623007).

Almost surely, 2^663246013 is an apocalyptic number.

It is an amenable number.

663246013 is a deficient number, since it is larger than the sum of its proper divisors (1).

663246013 is an equidigital number, since it uses as much as digits as its factorization.

663246013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 663246013 is about 25753.5631127035. The cubic root of 663246013 is about 872.0837939039.

Adding to 663246013 its reverse (310642366), we get a palindrome (973888379).

The spelling of 663246013 in words is "six hundred sixty-three million, two hundred forty-six thousand, thirteen".