846605 has 4 divisors (see below), whose sum is σ = 1015932. Its totient is φ = 677280.

The previous prime is 846589. The next prime is 846647. The reversal of 846605 is 506648.

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 643204 + 203401 = 802^2 + 451^2 .

It is not a de Polignac number, because 846605 - 2⁴ = 846589 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 84656 + ... + 84665.

It is an arithmetic number, because the mean of its divisors is an integer number (253983).

2⁸⁴⁶⁶⁰⁵ is an apocalyptic number.

It is an amenable number.

846605 is a deficient number, since it is larger than the sum of its proper divisors (169327).

846605 is a wasteful number, since it uses less digits than its factorization.

846605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169326.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 846605 is about 920.1114062982. Note that the first 3 decimals coincide. The cubic root of 846605 is about 94.6005387440.

The spelling of 846605 in words is "eight hundred forty-six thousand, six hundred five".