7881166 has 8 divisors (see below), whose sum is σ = 12517200. Its totient is φ = 3708768.

The previous prime is 7881163. The next prime is 7881173. The reversal of 7881166 is 6611887.

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

It is a super-3 number, since 3×7881166³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7881163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115866 + ... + 115933.

It is an arithmetic number, because the mean of its divisors is an integer number (1564650).

Almost surely, 2^7881166 is an apocalyptic number.

7881166 is a deficient number, since it is larger than the sum of its proper divisors (4636034).

7881166 is a wasteful number, since it uses less digits than its factorization.

7881166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231818.

The product of its digits is 16128, while the sum is 37.

The square root of 7881166 is about 2807.3414469922. The cubic root of 7881166 is about 199.0047724923.

The spelling of 7881166 in words is "seven million, eight hundred eighty-one thousand, one hundred sixty-six".