196635897 has 8 divisors (see below), whose sum is σ = 291312480. Its totient is φ = 131090580.

The previous prime is 196635893. The next prime is 196635899. The reversal of 196635897 is 798536691.

It is not a de Polignac number, because 196635897 - 2² = 196635893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (196635893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3641379 + ... + 3641432.

It is an arithmetic number, because the mean of its divisors is an integer number (36414060).

Almost surely, 2^196635897 is an apocalyptic number.

It is an amenable number.

196635897 is a deficient number, since it is larger than the sum of its proper divisors (94676583).

196635897 is an equidigital number, since it uses as much as digits as its factorization.

196635897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7282820 (or 7282814 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 54.

The square root of 196635897 is about 14022.6922165467. The cubic root of 196635897 is about 581.5060906914.

The spelling of 196635897 in words is "one hundred ninety-six million, six hundred thirty-five thousand, eight hundred ninety-seven".