63668566 has 8 divisors (see below), whose sum is σ = 102849264. Its totient is φ = 29385480.

The previous prime is 63668557. The next prime is 63668581. The reversal of 63668566 is 66586636.

63668566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

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, 1224370 + ... + 1224421.

It is an arithmetic number, because the mean of its divisors is an integer number (12856158).

Almost surely, 2^63668566 is an apocalyptic number.

63668566 is a deficient number, since it is larger than the sum of its proper divisors (39180698).

63668566 is a wasteful number, since it uses less digits than its factorization.

63668566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2448806.

The product of its digits is 933120, while the sum is 46.

The square root of 63668566 is about 7979.2584868520. The cubic root of 63668566 is about 399.3083171264.

The spelling of 63668566 in words is "sixty-three million, six hundred sixty-eight thousand, five hundred sixty-six".