867091 has 2 divisors, whose sum is σ = 867092. Its totient is φ = 867090.

The previous prime is 867079. The next prime is 867121. The reversal of 867091 is 190768.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 867091 - 2⁵ = 867059 is a prime.

It is a Chen prime.

867091 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (867001) 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 as a sum of consecutive naturals, namely, 433545 + 433546.

It is an arithmetic number, because the mean of its divisors is an integer number (433546).

2⁸⁶⁷⁰⁹¹ is an apocalyptic number.

867091 is a deficient number, since it is larger than the sum of its proper divisors (1).

867091 is an equidigital number, since it uses as much as digits as its factorization.

867091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 867091 is about 931.1772119205. The cubic root of 867091 is about 95.3575079558.

The spelling of 867091 in words is "eight hundred sixty-seven thousand, ninety-one".