196871 has 2 divisors, whose sum is σ = 196872. Its totient is φ = 196870.

The previous prime is 196853. The next prime is 196873. The reversal of 196871 is 178691.

It is a strong prime.

It is an emirp because it is prime and its reverse (178691) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-196871 is a prime.

Together with 196873, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98435 + 98436.

It is an arithmetic number, because the mean of its divisors is an integer number (98436).

2¹⁹⁶⁸⁷¹ is an apocalyptic number.

196871 is a deficient number, since it is larger than the sum of its proper divisors (1).

196871 is an equidigital number, since it uses as much as digits as its factorization.

196871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 32.

The square root of 196871 is about 443.7014762202. The cubic root of 196871 is about 58.1737752998.

The spelling of 196871 in words is "one hundred ninety-six thousand, eight hundred seventy-one".