663630271 has 12 divisors (see below), whose sum is σ = 715316832. Its totient is φ = 615309984.

The previous prime is 663630167. The next prime is 663630277. The reversal of 663630271 is 172036366.

It is not a de Polignac number, because 663630271 - 2²³ = 655241663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663630277) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2590 + ... + 36523.

It is an arithmetic number, because the mean of its divisors is an integer number (59609736).

Almost surely, 2^663630271 is an apocalyptic number.

663630271 is a deficient number, since it is larger than the sum of its proper divisors (51686561).

663630271 is a wasteful number, since it uses less digits than its factorization.

663630271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39198 (or 39179 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 34.

The square root of 663630271 is about 25761.0223205524. The cubic root of 663630271 is about 872.2521781199.

The spelling of 663630271 in words is "six hundred sixty-three million, six hundred thirty thousand, two hundred seventy-one".