8561612227 has 16 divisors (see below), whose sum is σ = 9823856832. Its totient is φ = 7309209600.

The previous prime is 8561612201. The next prime is 8561612231. The reversal of 8561612227 is 7222161658.

It is not a de Polignac number, because 8561612227 - 2²³ = 8553223619 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8561612227.

It is not an unprimeable number, because it can be changed into a prime (8561612827) 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, 3055227 + ... + 3058027.

It is an arithmetic number, because the mean of its divisors is an integer number (613991052).

Almost surely, 2^8561612227 is an apocalyptic number.

8561612227 is a deficient number, since it is larger than the sum of its proper divisors (1262244605).

8561612227 is a wasteful number, since it uses less digits than its factorization.

8561612227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4398.

The product of its digits is 80640, while the sum is 40.

The square root of 8561612227 is about 92528.9804709854. The cubic root of 8561612227 is about 2045.7466623062.

The spelling of 8561612227 in words is "eight billion, five hundred sixty-one million, six hundred twelve thousand, two hundred twenty-seven".