166197 has 4 divisors (see below), whose sum is σ = 221600. Its totient is φ = 110796.

The previous prime is 166189. The next prime is 166207. The reversal of 166197 is 791661.

166197 is nontrivially palindromic in base 6.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 166197 - 2³ = 166189 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27697 + ... + 27702.

It is an arithmetic number, because the mean of its divisors is an integer number (55400).

2¹⁶⁶¹⁹⁷ is an apocalyptic number.

It is an amenable number.

166197 is a deficient number, since it is larger than the sum of its proper divisors (55403).

166197 is an equidigital number, since it uses as much as digits as its factorization.

166197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55402.

The product of its digits is 2268, while the sum is 30.

The square root of 166197 is about 407.6726628068. The cubic root of 166197 is about 54.9803786758.

It can be divided in two parts, 166 and 197, that added together give a palindrome (363).

The spelling of 166197 in words is "one hundred sixty-six thousand, one hundred ninety-seven".