8266891 has 2 divisors, whose sum is σ = 8266892. Its totient is φ = 8266890.

The previous prime is 8266889. The next prime is 8266897. The reversal of 8266891 is 1986628.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8266891 - 2¹ = 8266889 is a prime.

Together with 8266889, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (8266897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4133445 + 4133446.

It is an arithmetic number, because the mean of its divisors is an integer number (4133446).

Almost surely, 2^8266891 is an apocalyptic number.

8266891 is a deficient number, since it is larger than the sum of its proper divisors (1).

8266891 is an equidigital number, since it uses as much as digits as its factorization.

8266891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 40.

The square root of 8266891 is about 2875.2201654830. The cubic root of 8266891 is about 202.1998071981.

The spelling of 8266891 in words is "eight million, two hundred sixty-six thousand, eight hundred ninety-one".