8270775209 has 2 divisors, whose sum is σ = 8270775210. Its totient is φ = 8270775208.

The previous prime is 8270775197. The next prime is 8270775211. The reversal of 8270775209 is 9025770728.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5416224025 + 2854551184 = 73595^2 + 53428^2 .

It is a cyclic number.

It is not a de Polignac number, because 8270775209 - 2⁴ = 8270775193 is a prime.

Together with 8270775211, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8270775299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4135387604 + 4135387605.

It is an arithmetic number, because the mean of its divisors is an integer number (4135387605).

Almost surely, 2^8270775209 is an apocalyptic number.

It is an amenable number.

8270775209 is a deficient number, since it is larger than the sum of its proper divisors (1).

8270775209 is an equidigital number, since it uses as much as digits as its factorization.

8270775209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 493920, while the sum is 47.

The square root of 8270775209 is about 90943.8024771342. The cubic root of 8270775209 is about 2022.3147018315.

The spelling of 8270775209 in words is "eight billion, two hundred seventy million, seven hundred seventy-five thousand, two hundred nine".