8266859 has 2 divisors, whose sum is σ = 8266860. Its totient is φ = 8266858.

The previous prime is 8266849. The next prime is 8266861. The reversal of 8266859 is 9586628.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8266859 is a prime.

It is a super-3 number, since 3×8266859³ (a number of 22 digits) contains 333 as substring.

Together with 8266861, 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 (8266829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4133429 + 4133430.

It is an arithmetic number, because the mean of its divisors is an integer number (4133430).

Almost surely, 2^8266859 is an apocalyptic number.

8266859 is a deficient number, since it is larger than the sum of its proper divisors (1).

8266859 is an equidigital number, since it uses as much as digits as its factorization.

8266859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 44.

The square root of 8266859 is about 2875.2146006864. The cubic root of 8266859 is about 202.1995463019.

The spelling of 8266859 in words is "eight million, two hundred sixty-six thousand, eight hundred fifty-nine".