191067 has 4 divisors (see below), whose sum is σ = 254760. Its totient is φ = 127376.

The previous prime is 191057. The next prime is 191071. The reversal of 191067 is 760191.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 191067 - 2⁸ = 190811 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (191027) 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, 31842 + ... + 31847.

It is an arithmetic number, because the mean of its divisors is an integer number (63690).

2¹⁹¹⁰⁶⁷ is an apocalyptic number.

191067 is a deficient number, since it is larger than the sum of its proper divisors (63693).

191067 is an equidigital number, since it uses as much as digits as its factorization.

191067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63692.

The product of its (nonzero) digits is 378, while the sum is 24.

The square root of 191067 is about 437.1121137649. The cubic root of 191067 is about 57.5963852863.

The spelling of 191067 in words is "one hundred ninety-one thousand, sixty-seven".