8255866 has 4 divisors (see below), whose sum is σ = 12383802. Its totient is φ = 4127932.

The previous prime is 8255857. The next prime is 8255867. The reversal of 8255866 is 6685528.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 8242641 + 13225 = 2871^2 + 115^2 .

It is not an unprimeable number, because it can be changed into a prime (8255867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2063965 + ... + 2063968.

Almost surely, 2^8255866 is an apocalyptic number.

8255866 is a deficient number, since it is larger than the sum of its proper divisors (4127936).

8255866 is a wasteful number, since it uses less digits than its factorization.

8255866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4127935.

The product of its digits is 115200, while the sum is 40.

The square root of 8255866 is about 2873.3022813481. The cubic root of 8255866 is about 202.1098804203.

The spelling of 8255866 in words is "eight million, two hundred fifty-five thousand, eight hundred sixty-six".