199701 has 6 divisors (see below), whose sum is σ = 288470. Its totient is φ = 133128.

The previous prime is 199697. The next prime is 199721. The reversal of 199701 is 107991.

It can be written as a sum of positive squares in only one way, i.e., 181476 + 18225 = 426^2 + 135^2 .

It is not a de Polignac number, because 199701 - 2² = 199697 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199721) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 11086 + ... + 11103.

2¹⁹⁹⁷⁰¹ is an apocalyptic number.

It is an amenable number.

199701 is a deficient number, since it is larger than the sum of its proper divisors (88769).

199701 is a wasteful number, since it uses less digits than its factorization.

199701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22195 (or 22192 counting only the distinct ones).

The product of its (nonzero) digits is 567, while the sum is 27.

The square root of 199701 is about 446.8791783021. The cubic root of 199701 is about 58.4511975193.

It can be divided in two parts, 199 and 701, that added together give a square (900 = 30²).

The spelling of 199701 in words is "one hundred ninety-nine thousand, seven hundred one".