199671 has 16 divisors (see below), whose sum is σ = 291840. Its totient is φ = 120960.

The previous prime is 199669. The next prime is 199673. The reversal of 199671 is 176991.

It is an interprime number because it is at equal distance from previous prime (199669) and next prime (199673).

It is not a de Polignac number, because 199671 - 2¹ = 199669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199673) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1711 + ... + 1823.

It is an arithmetic number, because the mean of its divisors is an integer number (18240).

2¹⁹⁹⁶⁷¹ is an apocalyptic number.

199671 is a deficient number, since it is larger than the sum of its proper divisors (92169).

199671 is a wasteful number, since it uses less digits than its factorization.

199671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166.

The product of its digits is 3402, while the sum is 33.

The square root of 199671 is about 446.8456109217. The cubic root of 199671 is about 58.4482704371.

The spelling of 199671 in words is "one hundred ninety-nine thousand, six hundred seventy-one".