663471017 has 4 divisors (see below), whose sum is σ = 723786576. Its totient is φ = 603155460.

The previous prime is 663471007. The next prime is 663471023. The reversal of 663471017 is 710174366.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 663471017 - 2⁸ = 663470761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (663471007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30157763 + ... + 30157784.

It is an arithmetic number, because the mean of its divisors is an integer number (180946644).

Almost surely, 2^663471017 is an apocalyptic number.

It is an amenable number.

663471017 is a deficient number, since it is larger than the sum of its proper divisors (60315559).

663471017 is a wasteful number, since it uses less digits than its factorization.

663471017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60315558.

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

The square root of 663471017 is about 25757.9311475126. The cubic root of 663471017 is about 872.1823999279.

The spelling of 663471017 in words is "six hundred sixty-three million, four hundred seventy-one thousand, seventeen".