663787366 has 24 divisors (see below), whose sum is σ = 1095752952. Its totient is φ = 301356000.

The previous prime is 663787361. The next prime is 663787373.

663787366 is nontrivially palindromic in base 10.

663787366 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×663787366² = 881227334522435912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663787361) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 367666 + ... + 369466.

It is an arithmetic number, because the mean of its divisors is an integer number (45656373).

Almost surely, 2^663787366 is an apocalyptic number.

663787366 is a deficient number, since it is larger than the sum of its proper divisors (431965586).

663787366 is a wasteful number, since it uses less digits than its factorization.

663787366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3348 (or 3337 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 52.

The square root of 663787366 is about 25764.0712233141. The cubic root of 663787366 is about 872.3209993953.

The spelling of 663787366 in words is "six hundred sixty-three million, seven hundred eighty-seven thousand, three hundred sixty-six".