8289220761 has 6 divisors (see below), whose sum is σ = 11973318890. Its totient is φ = 5526147168.

The previous prime is 8289220759. The next prime is 8289220777. The reversal of 8289220761 is 1670229828.

It can be written as a sum of positive squares in only one way, i.e., 7519491225 + 769729536 = 86715^2 + 27744^2 .

It is not a de Polignac number, because 8289220761 - 2¹ = 8289220759 is a prime.

It is a super-2 number, since 2×8289220761² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8289220711) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 460512256 + ... + 460512273.

Almost surely, 2^8289220761 is an apocalyptic number.

It is an amenable number.

8289220761 is a deficient number, since it is larger than the sum of its proper divisors (3684098129).

8289220761 is a wasteful number, since it uses less digits than its factorization.

8289220761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921024535 (or 921024532 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 8289220761 is about 91045.1578119342. The cubic root of 8289220761 is about 2023.8169799703.

The spelling of 8289220761 in words is "eight billion, two hundred eighty-nine million, two hundred twenty thousand, seven hundred sixty-one".