199706 has 8 divisors (see below), whose sum is σ = 322644. Its totient is φ = 92160.

The previous prime is 199697. The next prime is 199721. The reversal of 199706 is 607991.

It can be written as a sum of positive squares in 2 ways, for example, as 198025 + 1681 = 445^2 + 41^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable 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 in 3 ways as a sum of consecutive naturals, for example, 3815 + ... + 3866.

2¹⁹⁹⁷⁰⁶ is an apocalyptic number.

199706 is a deficient number, since it is larger than the sum of its proper divisors (122938).

199706 is a wasteful number, since it uses less digits than its factorization.

199706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7696.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 199706 is about 446.8847726204. The cubic root of 199706 is about 58.4516853378.

The spelling of 199706 in words is "one hundred ninety-nine thousand, seven hundred six".