663170741 has 2 divisors, whose sum is σ = 663170742. Its totient is φ = 663170740.

The previous prime is 663170713. The next prime is 663170749. The reversal of 663170741 is 147071366.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 663062500 + 108241 = 25750^2 + 329^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-663170741 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (663170749) 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, 331585370 + 331585371.

It is an arithmetic number, because the mean of its divisors is an integer number (331585371).

Almost surely, 2^663170741 is an apocalyptic number.

It is an amenable number.

663170741 is a deficient number, since it is larger than the sum of its proper divisors (1).

663170741 is an equidigital number, since it uses as much as digits as its factorization.

663170741 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 663170741 is about 25752.1016812221. The cubic root of 663170741 is about 872.0508016338.

The spelling of 663170741 in words is "six hundred sixty-three million, one hundred seventy thousand, seven hundred forty-one".