865141 has 4 divisors (see below), whose sum is σ = 886284. Its totient is φ = 844000.

The previous prime is 865121. The next prime is 865153. The reversal of 865141 is 141568.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 108241 + 756900 = 329^2 + 870^2 .

It is a cyclic number.

It is not a de Polignac number, because 865141 - 2⁹ = 864629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10510 + ... + 10591.

It is an arithmetic number, because the mean of its divisors is an integer number (221571).

2⁸⁶⁵¹⁴¹ is an apocalyptic number.

It is an amenable number.

865141 is a deficient number, since it is larger than the sum of its proper divisors (21143).

865141 is a wasteful number, since it uses less digits than its factorization.

865141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21142.

The product of its digits is 960, while the sum is 25.

The square root of 865141 is about 930.1295608677. The cubic root of 865141 is about 95.2859711709.

The spelling of 865141 in words is "eight hundred sixty-five thousand, one hundred forty-one".