663328814 has 16 divisors (see below), whose sum is σ = 1073402928. Its totient is φ = 306264192.

The previous prime is 663328801. The next prime is 663328829. The reversal of 663328814 is 418823366.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182252 + ... + 185855.

It is an arithmetic number, because the mean of its divisors is an integer number (67087683).

Almost surely, 2^663328814 is an apocalyptic number.

663328814 is a deficient number, since it is larger than the sum of its proper divisors (410074114).

663328814 is a wasteful number, since it uses less digits than its factorization.

663328814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368179.

The product of its digits is 165888, while the sum is 41.

The square root of 663328814 is about 25755.1706264975. The cubic root of 663328814 is about 872.1200833068.

The spelling of 663328814 in words is "six hundred sixty-three million, three hundred twenty-eight thousand, eight hundred fourteen".