2065561722 has 56 divisors (see below), whose sum is σ = 5309042016. Its totient is φ = 590157576.

The previous prime is 2065561679. The next prime is 2065561723. The reversal of 2065561722 is 2271655602.

2065561722 is a `hidden beast` number, since 20 + 6 + 5 + 561 + 72 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (2065561723) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 90988 + ... + 111399.

Almost surely, 2^2065561722 is an apocalyptic number.

2065561722 is an abundant number, since it is smaller than the sum of its proper divisors (3243480294).

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

2065561722 is an equidigital number, since it uses as much as digits as its factorization.

2065561722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202414 (or 202399 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 2065561722 is about 45448.4512607415. The cubic root of 2065561722 is about 1273.5403975248.

The spelling of 2065561722 in words is "two billion, sixty-five million, five hundred sixty-one thousand, seven hundred twenty-two".