166798 has 4 divisors (see below), whose sum is σ = 250200. Its totient is φ = 83398.

The previous prime is 166783. The next prime is 166799. The reversal of 166798 is 897661.

166798 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 897661 = 53 ⋅16937.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41698 + ... + 41701.

It is an arithmetic number, because the mean of its divisors is an integer number (62550).

2¹⁶⁶⁷⁹⁸ is an apocalyptic number.

166798 is a deficient number, since it is larger than the sum of its proper divisors (83402).

166798 is an equidigital number, since it uses as much as digits as its factorization.

166798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83401.

The product of its digits is 18144, while the sum is 37.

The square root of 166798 is about 408.4091086154. The cubic root of 166798 is about 55.0465721234.

The spelling of 166798 in words is "one hundred sixty-six thousand, seven hundred ninety-eight".