8663993668 has 12 divisors (see below), whose sum is σ = 16540351632. Its totient is φ = 3938178920.

The previous prime is 8663993659. The next prime is 8663993693.

8663993668 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98454430 + ... + 98454517.

It is an arithmetic number, because the mean of its divisors is an integer number (1378362636).

Almost surely, 2^8663993668 is an apocalyptic number.

It is an amenable number.

8663993668 is a deficient number, since it is larger than the sum of its proper divisors (7876357964).

8663993668 is a wasteful number, since it uses less digits than its factorization.

8663993668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196908962 (or 196908960 counting only the distinct ones).

The product of its digits is 60466176, while the sum is 64.

The square root of 8663993668 is about 93080.5762122259. The cubic root of 8663993668 is about 2053.8688524112.

The spelling of 8663993668 in words is "eight billion, six hundred sixty-three million, nine hundred ninety-three thousand, six hundred sixty-eight".