663602413 has 2 divisors, whose sum is σ = 663602414. Its totient is φ = 663602412.

The previous prime is 663602309. The next prime is 663602473. The reversal of 663602413 is 314206366.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 573219364 + 90383049 = 23942^2 + 9507^2 .

It is a cyclic number.

It is not a de Polignac number, because 663602413 - 2²⁵ = 630047981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (663602473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331801206 + 331801207.

It is an arithmetic number, because the mean of its divisors is an integer number (331801207).

Almost surely, 2^663602413 is an apocalyptic number.

It is an amenable number.

663602413 is a deficient number, since it is larger than the sum of its proper divisors (1).

663602413 is an equidigital number, since it uses as much as digits as its factorization.

663602413 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 663602413 is about 25760.4816142866. The cubic root of 663602413 is about 872.2399727588.

Adding to 663602413 its reverse (314206366), we get a palindrome (977808779).

The spelling of 663602413 in words is "six hundred sixty-three million, six hundred two thousand, four hundred thirteen".