195643 has 8 divisors (see below), whose sum is σ = 235520. Its totient is φ = 158760.

The previous prime is 195599. The next prime is 195659. The reversal of 195643 is 346591.

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

It is not a de Polignac number, because 195643 - 2⁹ = 195131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195043) 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, 603 + ... + 868.

It is an arithmetic number, because the mean of its divisors is an integer number (29440).

2¹⁹⁵⁶⁴³ is an apocalyptic number.

195643 is a deficient number, since it is larger than the sum of its proper divisors (39877).

195643 is a wasteful number, since it uses less digits than its factorization.

195643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497.

The product of its digits is 3240, while the sum is 28.

The square root of 195643 is about 442.3154982589. The cubic root of 195643 is about 58.0525682738.

It can be divided in two parts, 195 and 643, that added together give a palindrome (838).

The spelling of 195643 in words is "one hundred ninety-five thousand, six hundred forty-three".