196817 has 2 divisors, whose sum is σ = 196818. Its totient is φ = 196816.

The previous prime is 196799. The next prime is 196831. The reversal of 196817 is 718691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 192721 + 4096 = 439^2 + 64^2 .

It is an emirp because it is prime and its reverse (718691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 196817 - 2⁸ = 196561 is a prime.

It is not a weakly prime, because it can be changed into another prime (196837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98408 + 98409.

It is an arithmetic number, because the mean of its divisors is an integer number (98409).

2¹⁹⁶⁸¹⁷ is an apocalyptic number.

It is an amenable number.

196817 is a deficient number, since it is larger than the sum of its proper divisors (1).

196817 is an equidigital number, since it uses as much as digits as its factorization.

196817 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 196817 is about 443.6406203224. The cubic root of 196817 is about 58.1684559602.

The spelling of 196817 in words is "one hundred ninety-six thousand, eight hundred seventeen".