663343366 has 16 divisors (see below), whose sum is σ = 1204052256. Its totient is φ = 267566976.

The previous prime is 663343339. The next prime is 663343367.

663343366 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 (663343367) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1393341 + ... + 1393816.

It is an arithmetic number, because the mean of its divisors is an integer number (75253266).

Almost surely, 2^663343366 is an apocalyptic number.

663343366 is a deficient number, since it is larger than the sum of its proper divisors (540708890).

663343366 is a wasteful number, since it uses less digits than its factorization.

663343366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2787183.

The product of its digits is 419904, while the sum is 40.

The square root of 663343366 is about 25755.4531313274. The cubic root of 663343366 is about 872.1264607365.

The spelling of 663343366 in words is "six hundred sixty-three million, three hundred forty-three thousand, three hundred sixty-six".