663747366 has 32 divisors (see below), whose sum is σ = 1365619680. Its totient is φ = 214914816.

The previous prime is 663747361. The next prime is 663747373.

663747366 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663747361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155290 + ... + 159506.

It is an arithmetic number, because the mean of its divisors is an integer number (42675615).

Almost surely, 2^663747366 is an apocalyptic number.

663747366 is an abundant number, since it is smaller than the sum of its proper divisors (701872314).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

663747366 is a wasteful number, since it uses less digits than its factorization.

663747366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4968.

The product of its digits is 2286144, while the sum is 48.

The square root of 663747366 is about 25763.2949367894. The cubic root of 663747366 is about 872.3034769463.

The spelling of 663747366 in words is "six hundred sixty-three million, seven hundred forty-seven thousand, three hundred sixty-six".