6636656272 has 80 divisors (see below), whose sum is σ = 13271150592. Its totient is φ = 3214149120.

The previous prime is 6636656261. The next prime is 6636656317. The reversal of 6636656272 is 2726566366.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22650558 + ... + 22650850.

Almost surely, 2^6636656272 is an apocalyptic number.

It is an amenable number.

6636656272 is a deficient number, since it is larger than the sum of its proper divisors (6634494320).

6636656272 is a wasteful number, since it uses less digits than its factorization.

6636656272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656 (or 650 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 49.

The square root of 6636656272 is about 81465.6754222292. The cubic root of 6636656272 is about 1879.2437232731.

The spelling of 6636656272 in words is "six billion, six hundred thirty-six million, six hundred fifty-six thousand, two hundred seventy-two".