851485 has 8 divisors (see below), whose sum is σ = 1075680. Its totient is φ = 645264.

The previous prime is 851471. The next prime is 851491. The reversal of 851485 is 584158.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 851485 - 2⁹ = 850973 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4387 + ... + 4576.

It is an arithmetic number, because the mean of its divisors is an integer number (134460).

2⁸⁵¹⁴⁸⁵ is an apocalyptic number.

It is an amenable number.

851485 is a deficient number, since it is larger than the sum of its proper divisors (224195).

851485 is a wasteful number, since it uses less digits than its factorization.

851485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8987.

The product of its digits is 6400, while the sum is 31.

The square root of 851485 is about 922.7594486105. The cubic root of 851485 is about 94.7819560690.

The spelling of 851485 in words is "eight hundred fifty-one thousand, four hundred eighty-five".