854845 has 16 divisors (see below), whose sum is σ = 1108080. Its totient is φ = 630784.

The previous prime is 854807. The next prime is 854849. The reversal of 854845 is 548458.

It can be written as a sum of positive squares in 8 ways, for example, as 139129 + 715716 = 373^2 + 846^2 .

It is a cyclic number.

It is not a de Polignac number, because 854845 - 2⁹ = 854333 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 854845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (854849) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 7509 + ... + 7621.

It is an arithmetic number, because the mean of its divisors is an integer number (69255).

2⁸⁵⁴⁸⁴⁵ is an apocalyptic number.

854845 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

854845 is a deficient number, since it is larger than the sum of its proper divisors (253235).

854845 is a wasteful number, since it uses less digits than its factorization.

854845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224.

The product of its digits is 25600, while the sum is 34.

The square root of 854845 is about 924.5782822455. The cubic root of 854845 is about 94.9064637986.

The spelling of 854845 in words is "eight hundred fifty-four thousand, eight hundred forty-five".