2166798 has 32 divisors (see below), whose sum is σ = 4636800. Its totient is φ = 673056.

The previous prime is 2166797. The next prime is 2166821. The reversal of 2166798 is 8976612.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

Its product of digits (36288) is a multiple of the sum of its prime divisors (336).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166797) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9348 + ... + 9576.

It is an arithmetic number, because the mean of its divisors is an integer number (144900).

2^2166798 is an apocalyptic number.

2166798 is an abundant number, since it is smaller than the sum of its proper divisors (2470002).

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

2166798 is a wasteful number, since it uses less digits than its factorization.

2166798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336.

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

The square root of 2166798 is about 1472.0047554271. The cubic root of 2166798 is about 129.4015490802.

The spelling of 2166798 in words is "two million, one hundred sixty-six thousand, seven hundred ninety-eight".