663188056 has 8 divisors (see below), whose sum is σ = 1243477620. Its totient is φ = 331594024.

The previous prime is 663188023. The next prime is 663188063. The reversal of 663188056 is 650881366.

663188056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41449246 + ... + 41449261.

Almost surely, 2^663188056 is an apocalyptic number.

It is an amenable number.

663188056 is a deficient number, since it is larger than the sum of its proper divisors (580289564).

663188056 is a wasteful number, since it uses less digits than its factorization.

663188056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82898513 (or 82898509 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 663188056 is about 25752.4378651808. The cubic root of 663188056 is about 872.0583911464.

The spelling of 663188056 in words is "six hundred sixty-three million, one hundred eighty-eight thousand, fifty-six".