663016517 has 4 divisors (see below), whose sum is σ = 667786560. Its totient is φ = 658246476.

The previous prime is 663016513. The next prime is 663016583. The reversal of 663016517 is 715610366.

It is a happy number.

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 663016517 - 2² = 663016513 is a prime.

It is a super-2 number, since 2×663016517² = 879181803629622578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663016513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2384813 + ... + 2385090.

It is an arithmetic number, because the mean of its divisors is an integer number (166946640).

Almost surely, 2^663016517 is an apocalyptic number.

It is an amenable number.

663016517 is a deficient number, since it is larger than the sum of its proper divisors (4770043).

663016517 is a wasteful number, since it uses less digits than its factorization.

663016517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4770042.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 663016517 is about 25749.1071107330. The cubic root of 663016517 is about 871.9831963242.

The spelling of 663016517 in words is "six hundred sixty-three million, sixteen thousand, five hundred seventeen".