2166198 has 8 divisors (see below), whose sum is σ = 4332408. Its totient is φ = 722064.

The previous prime is 2166179. The next prime is 2166221. The reversal of 2166198 is 8916612.

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

2166198 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, 180511 + ... + 180522.

It is an arithmetic number, because the mean of its divisors is an integer number (541551).

2^2166198 is an apocalyptic number.

2166198 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.

2166198 is a wasteful number, since it uses less digits than its factorization.

2166198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361038.

The product of its digits is 5184, while the sum is 33.

The square root of 2166198 is about 1471.8009376271. The cubic root of 2166198 is about 129.3896039432.

The spelling of 2166198 in words is "two million, one hundred sixty-six thousand, one hundred ninety-eight".