196887 has 4 divisors (see below), whose sum is σ = 262520. Its totient is φ = 131256.

The previous prime is 196879. The next prime is 196901. The reversal of 196887 is 788691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 788691 = 3 ⋅262897.

It is not a de Polignac number, because 196887 - 2³ = 196879 is a prime.

It is a D-number.

It is a Duffinian number.

196887 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32812 + ... + 32817.

It is an arithmetic number, because the mean of its divisors is an integer number (65630).

2¹⁹⁶⁸⁸⁷ is an apocalyptic number.

196887 is a deficient number, since it is larger than the sum of its proper divisors (65633).

196887 is an equidigital number, since it uses as much as digits as its factorization.

196887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65632.

The product of its digits is 24192, while the sum is 39.

The square root of 196887 is about 443.7195059945. The cubic root of 196887 is about 58.1753512136.

The spelling of 196887 in words is "one hundred ninety-six thousand, eight hundred eighty-seven".