195963697 has 2 divisors, whose sum is σ = 195963698. Its totient is φ = 195963696.

The previous prime is 195963689. The next prime is 195963767. The reversal of 195963697 is 796369591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178062336 + 17901361 = 13344^2 + 4231^2 .

It is a cyclic number.

It is not a de Polignac number, because 195963697 - 2³ = 195963689 is a prime.

It is not a weakly prime, because it can be changed into another prime (195964697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97981848 + 97981849.

It is an arithmetic number, because the mean of its divisors is an integer number (97981849).

Almost surely, 2^195963697 is an apocalyptic number.

It is an amenable number.

195963697 is a deficient number, since it is larger than the sum of its proper divisors (1).

195963697 is an equidigital number, since it uses as much as digits as its factorization.

195963697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2755620, while the sum is 55.

The square root of 195963697 is about 13998.7034042443. The cubic root of 195963697 is about 580.8427078174.

It can be divided in two parts, 1959 and 63697, that added together give a palindrome (65656).

The spelling of 195963697 in words is "one hundred ninety-five million, nine hundred sixty-three thousand, six hundred ninety-seven".