854857 has 4 divisors (see below), whose sum is σ = 858820. Its totient is φ = 850896.

The previous prime is 854849. The next prime is 854869. The reversal of 854857 is 758458.

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 657721 + 197136 = 811^2 + 444^2 .

It is a cyclic number.

It is not a de Polignac number, because 854857 - 2³ = 854849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (854807) 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, 1638 + ... + 2095.

It is an arithmetic number, because the mean of its divisors is an integer number (214705).

2⁸⁵⁴⁸⁵⁷ is an apocalyptic number.

It is an amenable number.

854857 is a deficient number, since it is larger than the sum of its proper divisors (3963).

854857 is a wasteful number, since it uses less digits than its factorization.

854857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3962.

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

The square root of 854857 is about 924.5847716678. The cubic root of 854857 is about 94.9069078839.

It can be divided in two parts, 854 and 857, that added together give a triangular number (1711 = T₅₈).

The spelling of 854857 in words is "eight hundred fifty-four thousand, eight hundred fifty-seven".