6636804068 has 6 divisors (see below), whose sum is σ = 11614407126. Its totient is φ = 3318402032.

The previous prime is 6636804067. The next prime is 6636804103. The reversal of 6636804068 is 8604086366.

It can be written as a sum of positive squares in only one way, i.e., 6328520704 + 308283364 = 79552^2 + 17558^2 .

It is not an unprimeable number, because it can be changed into a prime (6636804067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 829600505 + ... + 829600512.

It is an arithmetic number, because the mean of its divisors is an integer number (1935734521).

Almost surely, 2^6636804068 is an apocalyptic number.

It is an amenable number.

6636804068 is a deficient number, since it is larger than the sum of its proper divisors (4977603058).

6636804068 is a wasteful number, since it uses less digits than its factorization.

6636804068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1659201021 (or 1659201019 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 47.

The square root of 6636804068 is about 81466.5825231426. The cubic root of 6636804068 is about 1879.2576732017.

The spelling of 6636804068 in words is "six billion, six hundred thirty-six million, eight hundred four thousand, sixty-eight".