9872166 has 16 divisors (see below), whose sum is σ = 19785024. Its totient is φ = 3283944.

The previous prime is 9872131. The next prime is 9872171. The reversal of 9872166 is 6612789.

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 7 ways as a sum of consecutive naturals, for example, 2121 + ... + 4923.

It is an arithmetic number, because the mean of its divisors is an integer number (1236564).

Almost surely, 2^9872166 is an apocalyptic number.

9872166 is an abundant number, since it is smaller than the sum of its proper divisors (9912858).

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

9872166 is a wasteful number, since it uses less digits than its factorization.

9872166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3395.

The product of its digits is 36288, while the sum is 39.

The square root of 9872166 is about 3142.0003182686. Note that the first 3 decimals coincide. The cubic root of 9872166 is about 214.5214957729.

The spelling of 9872166 in words is "nine million, eight hundred seventy-two thousand, one hundred sixty-six".