867085 has 12 divisors (see below), whose sum is σ = 1112724. Its totient is φ = 646400.

The previous prime is 867079. The next prime is 867091. The reversal of 867085 is 580768.

It is an interprime number because it is at equal distance from previous prime (867079) and next prime (867091).

It can be written as a sum of positive squares in 6 ways, for example, as 328329 + 538756 = 573^2 + 734^2 .

It is not a de Polignac number, because 867085 - 2⁹ = 866573 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 867085.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 8535 + ... + 8635.

It is an arithmetic number, because the mean of its divisors is an integer number (92727).

2⁸⁶⁷⁰⁸⁵ is an apocalyptic number.

867085 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

867085 is a deficient number, since it is larger than the sum of its proper divisors (245639).

867085 is a wasteful number, since it uses less digits than its factorization.

867085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 867085 is about 931.1739901866. The cubic root of 867085 is about 95.3572880072.

The spelling of 867085 in words is "eight hundred sixty-seven thousand, eighty-five".