7871166 has 12 divisors (see below), whose sum is σ = 17054232. Its totient is φ = 2623716.

The previous prime is 7871159. The next prime is 7871183. The reversal of 7871166 is 6611787.

It is a happy number.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 7871166.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 218626 + ... + 218661.

It is an arithmetic number, because the mean of its divisors is an integer number (1421186).

Almost surely, 2^7871166 is an apocalyptic number.

7871166 is an abundant number, since it is smaller than the sum of its proper divisors (9183066).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7871166 is a wasteful number, since it uses less digits than its factorization.

7871166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437295 (or 437292 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 7871166 is about 2805.5598371805. The cubic root of 7871166 is about 198.9205679466.

It can be divided in two parts, 787 and 1166, that added together give a triangular number (1953 = T₆₂).

The spelling of 7871166 in words is "seven million, eight hundred seventy-one thousand, one hundred sixty-six".