196611 is nontrivially palindromic in base 2, base 4 and base 16.
It is a semiprime because it is the product of two primes.
It is a 17-Lehmer number, since φ(196611) divides (196611-1)17.
It is a cyclic number.
It is a D-number.
It is a zygodrome in base 2.
In principle, a polygon with 196611 sides can be constructed with ruler and compass.
2196611 is an apocalyptic number.
196611 is an equidigital number, since it uses as much as digits as its factorization.
196611 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 65540.
The square root of 196611 is about 443.4083896365. The cubic root of 196611 is about 58.1481547244.
The spelling of 196611 in words is "one hundred ninety-six thousand, six hundred eleven".