208987 has 4 divisors (see below), whose sum is σ = 211120. Its totient is φ = 206856.

The previous prime is 208963. The next prime is 208991. The reversal of 208987 is 789802.

It is a happy number.

208987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 208987 - 2¹¹ = 206939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (208907) 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, 912 + ... + 1117.

It is an arithmetic number, because the mean of its divisors is an integer number (52780).

2²⁰⁸⁹⁸⁷ is an apocalyptic number.

208987 is a deficient number, since it is larger than the sum of its proper divisors (2133).

208987 is a wasteful number, since it uses less digits than its factorization.

208987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2132.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 208987 is about 457.1509597496. The cubic root of 208987 is about 59.3434909457.

The spelling of 208987 in words is "two hundred eight thousand, nine hundred eighty-seven".