860189 has 6 divisors (see below), whose sum is σ = 945630. Its totient is φ = 781880.

The previous prime is 860143. The next prime is 860239. The reversal of 860189 is 981068.

It can be written as a sum of positive squares in only one way, i.e., 592900 + 267289 = 770^2 + 517^2 .

It is not a de Polignac number, because 860189 - 2⁸ = 859933 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (860089) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3434 + ... + 3675.

It is an arithmetic number, because the mean of its divisors is an integer number (157605).

2⁸⁶⁰¹⁸⁹ is an apocalyptic number.

It is an amenable number.

860189 is a deficient number, since it is larger than the sum of its proper divisors (85441).

860189 is a wasteful number, since it uses less digits than its factorization.

860189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7131 (or 7120 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 860189 is about 927.4637459222. The cubic root of 860189 is about 95.1038200178.

The spelling of 860189 in words is "eight hundred sixty thousand, one hundred eighty-nine".