208604 has 18 divisors (see below), whose sum is σ = 402192. Its totient is φ = 94600.

The previous prime is 208591. The next prime is 208609. The reversal of 208604 is 406802.

208604 = T₂₀ + T₂₁ + ... + T₁₀₇.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208609) by changing a digit.

208604 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 5 ways as a sum of consecutive naturals, for example, 269 + ... + 699.

It is an arithmetic number, because the mean of its divisors is an integer number (22344).

2²⁰⁸⁶⁰⁴ is an apocalyptic number.

It is an amenable number.

208604 is a deficient number, since it is larger than the sum of its proper divisors (193588).

208604 is a wasteful number, since it uses less digits than its factorization.

208604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457 (or 444 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 208604 is about 456.7318688246. The cubic root of 208604 is about 59.3072168302.

The spelling of 208604 in words is "two hundred eight thousand, six hundred four".