8166856 has 16 divisors (see below), whose sum is σ = 15373440. Its totient is φ = 4067280.

The previous prime is 8166853. The next prime is 8166887. The reversal of 8166856 is 6586618.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (8166853) 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 in 3 ways as a sum of consecutive naturals, for example, 285 + ... + 4051.

It is an arithmetic number, because the mean of its divisors is an integer number (960840).

Almost surely, 2^8166856 is an apocalyptic number.

It is an amenable number.

8166856 is a deficient number, since it is larger than the sum of its proper divisors (7206584).

8166856 is a wasteful number, since it uses less digits than its factorization.

8166856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4044 (or 4040 counting only the distinct ones).

The product of its digits is 69120, while the sum is 40.

The square root of 8166856 is about 2857.7711594878. The cubic root of 8166856 is about 201.3809101584.

The spelling of 8166856 in words is "eight million, one hundred sixty-six thousand, eight hundred fifty-six".