857223 has 20 divisors (see below), whose sum is σ = 1350360. Its totient is φ = 540432.

The previous prime is 857221. The next prime is 857249. The reversal of 857223 is 322758.

It is not a de Polignac number, because 857223 - 2¹ = 857221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a d-powerful number, because it can be written as 8³ + 5³ + 2⁵ + 7⁷ + 2¹⁵ + 3⁵ .

857223 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857221) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1261 + ... + 1817.

It is an arithmetic number, because the mean of its divisors is an integer number (67518).

2⁸⁵⁷²²³ is an apocalyptic number.

857223 is a deficient number, since it is larger than the sum of its proper divisors (493137).

857223 is a wasteful number, since it uses less digits than its factorization.

857223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588 (or 579 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 857223 is about 925.8633808505. The cubic root of 857223 is about 94.9943856331.

The spelling of 857223 in words is "eight hundred fifty-seven thousand, two hundred twenty-three".