195897 has 8 divisors (see below), whose sum is σ = 281344. Its totient is φ = 120528.

The previous prime is 195893. The next prime is 195907. The reversal of 195897 is 798591.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 195897 - 2² = 195893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 5023 = 195897 / (1 + 9 + 5 + 8 + 9 + 7).

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 195897.

It is not an unprimeable number, because it can be changed into a prime (195893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2473 + ... + 2550.

It is an arithmetic number, because the mean of its divisors is an integer number (35168).

2¹⁹⁵⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

195897 is a deficient number, since it is larger than the sum of its proper divisors (85447).

195897 is a wasteful number, since it uses less digits than its factorization.

195897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5039.

The product of its digits is 22680, while the sum is 39.

The square root of 195897 is about 442.6025304943. The cubic root of 195897 is about 58.0776802988.

The spelling of 195897 in words is "one hundred ninety-five thousand, eight hundred ninety-seven".