663665036 has 12 divisors (see below), whose sum is σ = 1161595512. Its totient is φ = 331780608.

The previous prime is 663665021. The next prime is 663665059. The reversal of 663665036 is 630566366.

It is a junction number, because it is equal to n+sod(n) for n = 663664984 and 663665002.

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, 38291 + ... + 52853.

It is an arithmetic number, because the mean of its divisors is an integer number (96799626).

Almost surely, 2^663665036 is an apocalyptic number.

It is an amenable number.

663665036 is a deficient number, since it is larger than the sum of its proper divisors (497930476).

663665036 is a wasteful number, since it uses less digits than its factorization.

663665036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25960 (or 25958 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 41.

The square root of 663665036 is about 25761.6970714276. The cubic root of 663665036 is about 872.2674091498.

The spelling of 663665036 in words is "six hundred sixty-three million, six hundred sixty-five thousand, thirty-six".