196611 has 4 divisors (see below), whose sum is σ = 262152. Its totient is φ = 131072.

The previous prime is 196597. The next prime is 196613. The reversal of 196611 is 116691.

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 not a de Polignac number, because 196611 - 2⁵ = 196579 is a prime.

It is a D-number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (196613) by changing a digit.

In principle, a polygon with 196611 sides can be constructed with ruler and compass.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32766 + ... + 32771.

It is an arithmetic number, because the mean of its divisors is an integer number (65538).

2¹⁹⁶⁶¹¹ is an apocalyptic number.

196611 is a deficient number, since it is larger than the sum of its proper divisors (65541).

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 product of its digits is 324, while the sum is 24.

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".