857485 has 8 divisors (see below), whose sum is σ = 1034136. Its totient is φ = 682560.

The previous prime is 857471. The next prime is 857513. The reversal of 857485 is 584758.

857485 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 9 + 857476 = 3^2 + 926^2 .

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

It is not a de Polignac number, because 857485 - 2⁵ = 857453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1315 + ... + 1855.

It is an arithmetic number, because the mean of its divisors is an integer number (129267).

2⁸⁵⁷⁴⁸⁵ is an apocalyptic number.

It is an amenable number.

857485 is a deficient number, since it is larger than the sum of its proper divisors (176651).

857485 is a wasteful number, since it uses less digits than its factorization.

857485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863.

The product of its digits is 44800, while the sum is 37.

The square root of 857485 is about 926.0048595985. The cubic root of 857485 is about 95.0040626148.

The spelling of 857485 in words is "eight hundred fifty-seven thousand, four hundred eighty-five".