166303986 has 8 divisors (see below), whose sum is σ = 332607984. Its totient is φ = 55434660.

The previous prime is 166303967. The next prime is 166303997. The reversal of 166303986 is 689303661.

166303986 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

166303986 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13858660 + ... + 13858671.

It is an arithmetic number, because the mean of its divisors is an integer number (41575998).

Almost surely, 2^166303986 is an apocalyptic number.

166303986 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

166303986 is a wasteful number, since it uses less digits than its factorization.

166303986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27717336.

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 166303986 is about 12895.8902755878. The cubic root of 166303986 is about 549.9217365223.

The spelling of 166303986 in words is "one hundred sixty-six million, three hundred three thousand, nine hundred eighty-six".