8566849 has 2 divisors, whose sum is σ = 8566850. Its totient is φ = 8566848.

The previous prime is 8566837. The next prime is 8566897. The reversal of 8566849 is 9486658.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7049025 + 1517824 = 2655^2 + 1232^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8566849 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 8566799 and 8566808.

It is not a weakly prime, because it can be changed into another prime (8566949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4283424 + 4283425.

It is an arithmetic number, because the mean of its divisors is an integer number (4283425).

Almost surely, 2^8566849 is an apocalyptic number.

It is an amenable number.

8566849 is a deficient number, since it is larger than the sum of its proper divisors (1).

8566849 is an equidigital number, since it uses as much as digits as its factorization.

8566849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 46.

The square root of 8566849 is about 2926.9180036345. The cubic root of 8566849 is about 204.6163675952.

The spelling of 8566849 in words is "eight million, five hundred sixty-six thousand, eight hundred forty-nine".