6660456656 has 80 divisors (see below), whose sum is σ = 16294742784. Its totient is φ = 2569746432.

The previous prime is 6660456653. The next prime is 6660456659. The reversal of 6660456656 is 6566540666.

It is an interprime number because it is at equal distance from previous prime (6660456653) and next prime (6660456659).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6660456653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32255 + ... + 119838.

Almost surely, 2^6660456656 is an apocalyptic number.

It is an amenable number.

6660456656 is an abundant number, since it is smaller than the sum of its proper divisors (9634286128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6660456656 is a wasteful number, since it uses less digits than its factorization.

6660456656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152148 (or 152142 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 50.

The square root of 6660456656 is about 81611.6208391918. The cubic root of 6660456656 is about 1881.4874918387.

The spelling of 6660456656 in words is "six billion, six hundred sixty million, four hundred fifty-six thousand, six hundred fifty-six".