663285173 has 2 divisors, whose sum is σ = 663285174. Its totient is φ = 663285172.

The previous prime is 663285163. The next prime is 663285221. The reversal of 663285173 is 371582366.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 592338244 + 70946929 = 24338^2 + 8423^2 .

It is a cyclic number.

It is not a de Polignac number, because 663285173 - 2¹⁴ = 663268789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 663285173.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (663285143) 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, 331642586 + 331642587.

It is an arithmetic number, because the mean of its divisors is an integer number (331642587).

Almost surely, 2^663285173 is an apocalyptic number.

It is an amenable number.

663285173 is a deficient number, since it is larger than the sum of its proper divisors (1).

663285173 is an equidigital number, since it uses as much as digits as its factorization.

663285173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 41.

The square root of 663285173 is about 25754.3233846281. The cubic root of 663285173 is about 872.1009570322.

The spelling of 663285173 in words is "six hundred sixty-three million, two hundred eighty-five thousand, one hundred seventy-three".