872857 has 8 divisors (see below), whose sum is σ = 912384. Its totient is φ = 834288.

The previous prime is 872843. The next prime is 872863. The reversal of 872857 is 758278.

872857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 872857 - 2¹¹ = 870809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (872057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2088 + ... + 2470.

It is an arithmetic number, because the mean of its divisors is an integer number (114048).

2⁸⁷²⁸⁵⁷ is an apocalyptic number.

It is an amenable number.

872857 is a deficient number, since it is larger than the sum of its proper divisors (39527).

872857 is a wasteful number, since it uses less digits than its factorization.

872857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479.

The product of its digits is 31360, while the sum is 37.

The square root of 872857 is about 934.2681627884. The cubic root of 872857 is about 95.5684112764.

The spelling of 872857 in words is "eight hundred seventy-two thousand, eight hundred fifty-seven".