871117 has 8 divisors (see below), whose sum is σ = 948024. Its totient is φ = 795648.

The previous prime is 871103. The next prime is 871147. The reversal of 871117 is 711178.

It can be written as a sum of positive squares in 4 ways, for example, as 4356 + 866761 = 66^2 + 931^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 871117 - 2¹¹ = 869069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 871091 and 871100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871147) 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 7 ways as a sum of consecutive naturals, for example, 1173 + ... + 1765.

It is an arithmetic number, because the mean of its divisors is an integer number (118503).

2⁸⁷¹¹¹⁷ is an apocalyptic number.

It is an amenable number.

871117 is a deficient number, since it is larger than the sum of its proper divisors (76907).

871117 is a wasteful number, since it uses less digits than its factorization.

871117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719.

The product of its digits is 392, while the sum is 25.

The square root of 871117 is about 933.3364880899. The cubic root of 871117 is about 95.5048652986.

It can be divided in two parts, 87 and 1117, that multiplied together give a palindrome (97179).

The spelling of 871117 in words is "eight hundred seventy-one thousand, one hundred seventeen".