9998166 has 8 divisors (see below), whose sum is σ = 19996344. Its totient is φ = 3332720.

The previous prime is 9998147. The next prime is 9998173. The reversal of 9998166 is 6618999.

9998166 is digitally balanced in base 2, 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.

9998166 is an admirable number.

It is a congruent 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, 833175 + ... + 833186.

It is an arithmetic number, because the mean of its divisors is an integer number (2499543).

Almost surely, 2^9998166 is an apocalyptic number.

9998166 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.

9998166 is a wasteful number, since it uses less digits than its factorization.

9998166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666366.

The product of its digits is 209952, while the sum is 48.

The square root of 9998166 is about 3161.9876660101. The cubic root of 9998166 is about 215.4302974205.

The spelling of 9998166 in words is "nine million, nine hundred ninety-eight thousand, one hundred sixty-six".