196644197 has 2 divisors, whose sum is σ = 196644198. Its totient is φ = 196644196.

The previous prime is 196644169. The next prime is 196644199. The reversal of 196644197 is 791446691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131583841 + 65060356 = 11471^2 + 8066^2 .

It is a cyclic number.

It is not a de Polignac number, because 196644197 - 2¹⁴ = 196627813 is a prime.

Together with 196644199, it forms a pair of twin primes.

It is a Chen prime.

It is a pancake number, because a pancake can be divided into 196644197 parts by 19831 straight cuts.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196644199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98322098 + 98322099.

It is an arithmetic number, because the mean of its divisors is an integer number (98322099).

Almost surely, 2^196644197 is an apocalyptic number.

It is an amenable number.

196644197 is a deficient number, since it is larger than the sum of its proper divisors (1).

196644197 is an equidigital number, since it uses as much as digits as its factorization.

196644197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 47.

The square root of 196644197 is about 14022.9881622998. The cubic root of 196644197 is about 581.5142723658.

The spelling of 196644197 in words is "one hundred ninety-six million, six hundred forty-four thousand, one hundred ninety-seven".