208487 has 4 divisors (see below), whose sum is σ = 219480. Its totient is φ = 197496.

The previous prime is 208469. The next prime is 208489. The reversal of 208487 is 784802.

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 208487 - 2⁸ = 208231 is a prime.

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 208487.

It is not an unprimeable number, because it can be changed into a prime (208489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5468 + ... + 5505.

It is an arithmetic number, because the mean of its divisors is an integer number (54870).

2²⁰⁸⁴⁸⁷ is an apocalyptic number.

208487 is a deficient number, since it is larger than the sum of its proper divisors (10993).

208487 is a wasteful number, since it uses less digits than its factorization.

208487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10992.

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 208487 is about 456.6037669577. The cubic root of 208487 is about 59.2961268510.

The spelling of 208487 in words is "two hundred eight thousand, four hundred eighty-seven".