6656755727 has 4 divisors (see below), whose sum is σ = 6657000000. Its totient is φ = 6656511456.

The previous prime is 6656755709. The next prime is 6656755741. The reversal of 6656755727 is 7275576566.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6656755727 - 2⁶ = 6656755663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6656755757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75263 + ... + 137760.

It is an arithmetic number, because the mean of its divisors is an integer number (1664250000).

Almost surely, 2^6656755727 is an apocalyptic number.

6656755727 is a deficient number, since it is larger than the sum of its proper divisors (244273).

6656755727 is a wasteful number, since it uses less digits than its factorization.

6656755727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244272.

The product of its digits is 18522000, while the sum is 56.

The square root of 6656755727 is about 81588.9436566009. The cubic root of 6656755727 is about 1881.1389400749.

The spelling of 6656755727 in words is "six billion, six hundred fifty-six million, seven hundred fifty-five thousand, seven hundred twenty-seven".