8166986 has 8 divisors (see below), whose sum is σ = 12332064. Its totient is φ = 4056300.

The previous prime is 8166967. The next prime is 8166997. The reversal of 8166986 is 6896618.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 13220 + ... + 13823.

It is an arithmetic number, because the mean of its divisors is an integer number (1541508).

Almost surely, 2^8166986 is an apocalyptic number.

8166986 is a deficient number, since it is larger than the sum of its proper divisors (4165078).

8166986 is a wasteful number, since it uses less digits than its factorization.

8166986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27196.

The product of its digits is 124416, while the sum is 44.

The square root of 8166986 is about 2857.7939043955. The cubic root of 8166986 is about 201.3819786797.

The spelling of 8166986 in words is "eight million, one hundred sixty-six thousand, nine hundred eighty-six".