857873 has 2 divisors, whose sum is σ = 857874. Its totient is φ = 857872.

The previous prime is 857867. The next prime is 857897. The reversal of 857873 is 378758.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 692224 + 165649 = 832^2 + 407^2 .

It is a cyclic number.

It is not a de Polignac number, because 857873 - 2⁶ = 857809 is a prime.

It is not a weakly prime, because it can be changed into another prime (857273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428936 + 428937.

It is an arithmetic number, because the mean of its divisors is an integer number (428937).

2⁸⁵⁷⁸⁷³ is an apocalyptic number.

It is an amenable number.

857873 is a deficient number, since it is larger than the sum of its proper divisors (1).

857873 is an equidigital number, since it uses as much as digits as its factorization.

857873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47040, while the sum is 38.

The square root of 857873 is about 926.2143380449. The cubic root of 857873 is about 95.0183897917.

The spelling of 857873 in words is "eight hundred fifty-seven thousand, eight hundred seventy-three".