196597771 has 2 divisors, whose sum is σ = 196597772. Its totient is φ = 196597770.

The previous prime is 196597759. The next prime is 196597801. The reversal of 196597771 is 177795691.

It is a weak prime.

It is an emirp because it is prime and its reverse (177795691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 196597771 - 2⁹ = 196597259 is a prime.

It is not a weakly prime, because it can be changed into another prime (196592771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98298885 + 98298886.

It is an arithmetic number, because the mean of its divisors is an integer number (98298886).

Almost surely, 2^196597771 is an apocalyptic number.

196597771 is a deficient number, since it is larger than the sum of its proper divisors (1).

196597771 is an equidigital number, since it uses as much as digits as its factorization.

196597771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 833490, while the sum is 52.

The square root of 196597771 is about 14021.3327112654. The cubic root of 196597771 is about 581.4685052614.

The spelling of 196597771 in words is "one hundred ninety-six million, five hundred ninety-seven thousand, seven hundred seventy-one".