663315241 has 2 divisors, whose sum is σ = 663315242. Its totient is φ = 663315240.

The previous prime is 663315227. The next prime is 663315269. The reversal of 663315241 is 142513366.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 464618025 + 198697216 = 21555^2 + 14096^2 .

It is a cyclic number.

It is not a de Polignac number, because 663315241 - 2¹¹ = 663313193 is a prime.

It is not a weakly prime, because it can be changed into another prime (663315221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331657620 + 331657621.

It is an arithmetic number, because the mean of its divisors is an integer number (331657621).

Almost surely, 2^663315241 is an apocalyptic number.

It is an amenable number.

663315241 is a deficient number, since it is larger than the sum of its proper divisors (1).

663315241 is an equidigital number, since it uses as much as digits as its factorization.

663315241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 31.

The square root of 663315241 is about 25754.9071246627. The cubic root of 663315241 is about 872.1141348409.

The spelling of 663315241 in words is "six hundred sixty-three million, three hundred fifteen thousand, two hundred forty-one".