208704 has 28 divisors (see below), whose sum is σ = 552704. Its totient is φ = 69504.

The previous prime is 208699. The next prime is 208721. The reversal of 208704 is 407802.

It is a happy number.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

208704 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 352 + ... + 735.

2²⁰⁸⁷⁰⁴ is an apocalyptic number.

208704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

208704 is an abundant number, since it is smaller than the sum of its proper divisors (344000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

208704 is a wasteful number, since it uses less digits than its factorization.

208704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1102 (or 1092 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 208704 is about 456.8413291286. The cubic root of 208704 is about 59.3166921587.

The spelling of 208704 in words is "two hundred eight thousand, seven hundred four".