195717 has 4 divisors (see below), whose sum is σ = 260960. Its totient is φ = 130476.

The previous prime is 195709. The next prime is 195731. The reversal of 195717 is 717591.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 195717 - 2³ = 195709 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 195717.

It is not an unprimeable number, because it can be changed into a prime (195737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32617 + ... + 32622.

It is an arithmetic number, because the mean of its divisors is an integer number (65240).

2¹⁹⁵⁷¹⁷ is an apocalyptic number.

It is an amenable number.

195717 is a deficient number, since it is larger than the sum of its proper divisors (65243).

195717 is an equidigital number, since it uses as much as digits as its factorization.

195717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65242.

The product of its digits is 2205, while the sum is 30.

The square root of 195717 is about 442.3991410480. The cubic root of 195717 is about 58.0598866182.

The spelling of 195717 in words is "one hundred ninety-five thousand, seven hundred seventeen".