2272704561 has 10 divisors (see below), whose sum is σ = 3395027922. Its totient is φ = 1515136320.

The previous prime is 2272704559. The next prime is 2272704583. The reversal of 2272704561 is 1654072722.

It is a happy number.

2272704561 is a `hidden beast` number, since 2 + 27 + 2 + 70 + 4 + 561 = 666.

2272704561 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2190240000 + 82464561 = 46800^2 + 9081^2 .

It is not a de Polignac number, because 2272704561 - 2¹ = 2272704559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2272704541) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 14028960 + ... + 14029121.

Almost surely, 2^2272704561 is an apocalyptic number.

It is an amenable number.

2272704561 is a deficient number, since it is larger than the sum of its proper divisors (1122323361).

2272704561 is an equidigital number, since it uses as much as digits as its factorization.

2272704561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28058093 (or 28058084 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 2272704561 is about 47672.8912590793. The cubic root of 2272704561 is about 1314.7635675879.

The spelling of 2272704561 in words is "two billion, two hundred seventy-two million, seven hundred four thousand, five hundred sixty-one".