663848366 has 4 divisors (see below), whose sum is σ = 995772552. Its totient is φ = 331924182.

The previous prime is 663848363. The next prime is 663848369.

663848366 is nontrivially palindromic in base 10.

663848366 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (663848363) and next prime (663848369).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663848363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165962090 + ... + 165962093.

It is an arithmetic number, because the mean of its divisors is an integer number (248943138).

Almost surely, 2^663848366 is an apocalyptic number.

663848366 is a deficient number, since it is larger than the sum of its proper divisors (331924186).

663848366 is a wasteful number, since it uses less digits than its factorization.

663848366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331924185.

The product of its digits is 2985984, while the sum is 50.

The square root of 663848366 is about 25765.2550152332. The cubic root of 663848366 is about 872.3477197749.

The spelling of 663848366 in words is "six hundred sixty-three million, eight hundred forty-eight thousand, three hundred sixty-six".