195987 has 8 divisors (see below), whose sum is σ = 285120. Its totient is φ = 118760.

The previous prime is 195977. The next prime is 195991. The reversal of 195987 is 789591.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 195987 - 2⁴ = 195971 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 195987.

It is not an unprimeable number, because it can be changed into a prime (195907) 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, 2937 + ... + 3002.

It is an arithmetic number, because the mean of its divisors is an integer number (35640).

2¹⁹⁵⁹⁸⁷ is an apocalyptic number.

195987 is a deficient number, since it is larger than the sum of its proper divisors (89133).

195987 is a wasteful number, since it uses less digits than its factorization.

195987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5953.

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

The square root of 195987 is about 442.7041901767. The cubic root of 195987 is about 58.0865730519.

It can be divided in two parts, 19 and 5987, that added together give a palindrome (6006).

The spelling of 195987 in words is "one hundred ninety-five thousand, nine hundred eighty-seven".