199708 has 6 divisors (see below), whose sum is σ = 349496. Its totient is φ = 99852.

The previous prime is 199697. The next prime is 199721. The reversal of 199708 is 807991.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

199708 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 (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24960 + ... + 24967.

2¹⁹⁹⁷⁰⁸ is an apocalyptic number.

It is an amenable number.

199708 is a deficient number, since it is larger than the sum of its proper divisors (149788).

199708 is a wasteful number, since it uses less digits than its factorization.

199708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49931 (or 49929 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 199708 is about 446.8870103281. The cubic root of 199708 is about 58.4518804629.

The spelling of 199708 in words is "one hundred ninety-nine thousand, seven hundred eight".