6981166 has 8 divisors (see below), whose sum is σ = 10483704. Its totient is φ = 3486600.

The previous prime is 6981157. The next prime is 6981181. The reversal of 6981166 is 6611896.

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

It is a congruent number.

It is an unprimeable number.

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, 1261 + ... + 3943.

It is an arithmetic number, because the mean of its divisors is an integer number (1310463).

Almost surely, 2^6981166 is an apocalyptic number.

6981166 is a deficient number, since it is larger than the sum of its proper divisors (3502538).

6981166 is a wasteful number, since it uses less digits than its factorization.

6981166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3986.

The product of its digits is 15552, while the sum is 37.

The square root of 6981166 is about 2642.1896222641. The cubic root of 6981166 is about 191.1214015802.

The spelling of 6981166 in words is "six million, nine hundred eighty-one thousand, one hundred sixty-six".