663404366 has 8 divisors (see below), whose sum is σ = 996587184. Its totient is φ = 331208640.

The previous prime is 663404353. The next prime is 663404429.

663404366 is nontrivially palindromic in base 10.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245090 + ... + 247781.

It is an arithmetic number, because the mean of its divisors is an integer number (124573398).

Almost surely, 2^663404366 is an apocalyptic number.

663404366 is a deficient number, since it is larger than the sum of its proper divisors (333182818).

663404366 is a wasteful number, since it uses less digits than its factorization.

663404366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493546.

The product of its (nonzero) digits is 186624, while the sum is 38.

The square root of 663404366 is about 25756.6373193397. The cubic root of 663404366 is about 872.1531930375.

The spelling of 663404366 in words is "six hundred sixty-three million, four hundred four thousand, three hundred sixty-six".