663329517 has 8 divisors (see below), whose sum is σ = 885167424. Its totient is φ = 441855648.

The previous prime is 663329483. The next prime is 663329531. The reversal of 663329517 is 715923366.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-663329517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663329417) 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 in 7 ways as a sum of consecutive naturals, for example, 86728 + ... + 94065.

It is an arithmetic number, because the mean of its divisors is an integer number (110645928).

Almost surely, 2^663329517 is an apocalyptic number.

It is an amenable number.

663329517 is a deficient number, since it is larger than the sum of its proper divisors (221837907).

663329517 is a wasteful number, since it uses less digits than its factorization.

663329517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182019.

The product of its digits is 204120, while the sum is 42.

The square root of 663329517 is about 25755.1842742388. The cubic root of 663329517 is about 872.1203913995.

The spelling of 663329517 in words is "six hundred sixty-three million, three hundred twenty-nine thousand, five hundred seventeen".