7986166 has 4 divisors (see below), whose sum is σ = 11979252. Its totient is φ = 3993082.

The previous prime is 7986163. The next prime is 7986179. The reversal of 7986166 is 6616897.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7986161) 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, 1996540 + ... + 1996543.

It is an arithmetic number, because the mean of its divisors is an integer number (2994813).

Almost surely, 2^7986166 is an apocalyptic number.

7986166 is a deficient number, since it is larger than the sum of its proper divisors (3993086).

7986166 is a wasteful number, since it uses less digits than its factorization.

7986166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3993085.

The product of its digits is 108864, while the sum is 43.

The square root of 7986166 is about 2825.9805377957. The cubic root of 7986166 is about 199.8846501515.

The spelling of 7986166 in words is "seven million, nine hundred eighty-six thousand, one hundred sixty-six".