6561247227 has 8 divisors (see below), whose sum is σ = 8868170064. Its totient is φ = 4314244608.

The previous prime is 6561247213. The next prime is 6561247229. The reversal of 6561247227 is 7227421656.

6561247227 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6561247227 - 2⁴ = 6561247211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6561247229) 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, 14979798 + ... + 14980235.

It is an arithmetic number, because the mean of its divisors is an integer number (1108521258).

Almost surely, 2^6561247227 is an apocalyptic number.

6561247227 is a deficient number, since it is larger than the sum of its proper divisors (2306922837).

6561247227 is a wasteful number, since it uses less digits than its factorization.

6561247227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29960109.

The product of its digits is 282240, while the sum is 42.

The square root of 6561247227 is about 81001.5260782166. The cubic root of 6561247227 is about 1872.0989545293.

The spelling of 6561247227 in words is "six billion, five hundred sixty-one million, two hundred forty-seven thousand, two hundred twenty-seven".