663304913 has 2 divisors, whose sum is σ = 663304914. Its totient is φ = 663304912.

The previous prime is 663304903. The next prime is 663304919. The reversal of 663304913 is 319403366.

663304913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 621405184 + 41899729 = 24928^2 + 6473^2 .

It is a cyclic number.

It is not a de Polignac number, because 663304913 - 2¹² = 663300817 is a prime.

It is not a weakly prime, because it can be changed into another prime (663304919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331652456 + 331652457.

It is an arithmetic number, because the mean of its divisors is an integer number (331652457).

Almost surely, 2^663304913 is an apocalyptic number.

It is an amenable number.

663304913 is a deficient number, since it is larger than the sum of its proper divisors (1).

663304913 is an equidigital number, since it uses as much as digits as its factorization.

663304913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 35.

The square root of 663304913 is about 25754.7066184028. The cubic root of 663304913 is about 872.1096084654.

The spelling of 663304913 in words is "six hundred sixty-three million, three hundred four thousand, nine hundred thirteen".