663665116 has 48 divisors (see below), whose sum is σ = 1239295680. Its totient is φ = 310464000.

The previous prime is 663665113. The next prime is 663665137. The reversal of 663665116 is 611566366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663665113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 501736 + ... + 503056.

It is an arithmetic number, because the mean of its divisors is an integer number (25818660).

Almost surely, 2^663665116 is an apocalyptic number.

It is an amenable number.

663665116 is a deficient number, since it is larger than the sum of its proper divisors (575630564).

663665116 is a wasteful number, since it uses less digits than its factorization.

663665116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1486 (or 1484 counting only the distinct ones).

The product of its digits is 116640, while the sum is 40.

The square root of 663665116 is about 25761.6986241203. The cubic root of 663665116 is about 872.2674441983.

The spelling of 663665116 in words is "six hundred sixty-three million, six hundred sixty-five thousand, one hundred sixteen".