663959288 has 8 divisors (see below), whose sum is σ = 1244923680. Its totient is φ = 331979640.

The previous prime is 663959287. The next prime is 663959311. The reversal of 663959288 is 882959366.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×663959288² = 881683872242933888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663959281) 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 as a sum of consecutive naturals, namely, 41497448 + ... + 41497463.

It is an arithmetic number, because the mean of its divisors is an integer number (155615460).

Almost surely, 2^663959288 is an apocalyptic number.

It is an amenable number.

663959288 is a deficient number, since it is larger than the sum of its proper divisors (580964392).

663959288 is a wasteful number, since it uses less digits than its factorization.

663959288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82994917 (or 82994913 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 56.

The square root of 663959288 is about 25767.4074753360. The cubic root of 663959288 is about 872.3963037437.

The spelling of 663959288 in words is "six hundred sixty-three million, nine hundred fifty-nine thousand, two hundred eighty-eight".