871867 has 2 divisors, whose sum is σ = 871868. Its totient is φ = 871866.

The previous prime is 871837. The next prime is 871883. The reversal of 871867 is 768178.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 871867 - 2¹¹ = 869819 is a prime.

It is a Chen prime.

871867 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (871817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435933 + 435934.

It is an arithmetic number, because the mean of its divisors is an integer number (435934).

2⁸⁷¹⁸⁶⁷ is an apocalyptic number.

871867 is a deficient number, since it is larger than the sum of its proper divisors (1).

871867 is an equidigital number, since it uses as much as digits as its factorization.

871867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18816, while the sum is 37.

The square root of 871867 is about 933.7381860029. The cubic root of 871867 is about 95.5322661729.

The spelling of 871867 in words is "eight hundred seventy-one thousand, eight hundred sixty-seven".