195667 has 4 divisors (see below), whose sum is σ = 196560. Its totient is φ = 194776.

The previous prime is 195659. The next prime is 195677. The reversal of 195667 is 766591.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 195667 - 2³ = 195659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138 + ... + 640.

It is an arithmetic number, because the mean of its divisors is an integer number (49140).

2¹⁹⁵⁶⁶⁷ is an apocalyptic number.

195667 is a deficient number, since it is larger than the sum of its proper divisors (893).

195667 is an equidigital number, since it uses as much as digits as its factorization.

195667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892.

The product of its digits is 11340, while the sum is 34.

The square root of 195667 is about 442.3426273829. The cubic root of 195667 is about 58.0549419930.

The spelling of 195667 in words is "one hundred ninety-five thousand, six hundred sixty-seven".