6656033666 has 16 divisors (see below), whose sum is σ = 10159974720. Its totient is φ = 3269507280.

The previous prime is 6656033633. The next prime is 6656033669. The reversal of 6656033666 is 6663306566.

It is a self number, because there is not a number n which added to its sum of digits gives 6656033666.

It is not an unprimeable number, because it can be changed into a prime (6656033669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69845 + ... + 134871.

It is an arithmetic number, because the mean of its divisors is an integer number (634998420).

Almost surely, 2^6656033666 is an apocalyptic number.

6656033666 is a deficient number, since it is larger than the sum of its proper divisors (3503941054).

6656033666 is a wasteful number, since it uses less digits than its factorization.

6656033666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65929.

The product of its (nonzero) digits is 2099520, while the sum is 47.

The square root of 6656033666 is about 81584.5185436551. The cubic root of 6656033666 is about 1881.0709216470.

The spelling of 6656033666 in words is "six billion, six hundred fifty-six million, thirty-three thousand, six hundred sixty-six".