846865 has 4 divisors (see below), whose sum is σ = 1016244. Its totient is φ = 677488.

The previous prime is 846851. The next prime is 846869. The reversal of 846865 is 568648.

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 263169 + 583696 = 513^2 + 764^2 .

It is a cyclic number.

It is not a de Polignac number, because 846865 - 2⁹ = 846353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (846869) 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, 84682 + ... + 84691.

It is an arithmetic number, because the mean of its divisors is an integer number (254061).

2⁸⁴⁶⁸⁶⁵ is an apocalyptic number.

It is an amenable number.

846865 is a deficient number, since it is larger than the sum of its proper divisors (169379).

846865 is a wasteful number, since it uses less digits than its factorization.

846865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169378.

The product of its digits is 46080, while the sum is 37.

The square root of 846865 is about 920.2526826910. The cubic root of 846865 is about 94.6102219778.

It can be divided in two parts, 846 and 865, that added together give a triangular number (1711 = T₅₈).

The spelling of 846865 in words is "eight hundred forty-six thousand, eight hundred sixty-five".