6665656056 has 32 divisors (see below), whose sum is σ = 16770290640. Its totient is φ = 2207731968.

The previous prime is 6665656031. The next prime is 6665656073. The reversal of 6665656056 is 6506565666.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 880741 + ... + 888276.

Almost surely, 2^6665656056 is an apocalyptic number.

It is an amenable number.

6665656056 is an abundant number, since it is smaller than the sum of its proper divisors (10104634584).

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

6665656056 is a wasteful number, since it uses less digits than its factorization.

6665656056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1769183 (or 1769179 counting only the distinct ones).

The product of its (nonzero) digits is 5832000, while the sum is 51.

The square root of 6665656056 is about 81643.4691570612. The cubic root of 6665656056 is about 1881.9769508512.

The spelling of 6665656056 in words is "six billion, six hundred sixty-five million, six hundred fifty-six thousand, fifty-six".