857343 has 4 divisors (see below), whose sum is σ = 1143128. Its totient is φ = 571560.

The previous prime is 857341. The next prime is 857347. The reversal of 857343 is 343758.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 857343 - 2¹ = 857341 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 857343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142888 + ... + 142893.

It is an arithmetic number, because the mean of its divisors is an integer number (285782).

2⁸⁵⁷³⁴³ is an apocalyptic number.

857343 is a deficient number, since it is larger than the sum of its proper divisors (285785).

857343 is a wasteful number, since it uses less digits than its factorization.

857343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285784.

The product of its digits is 10080, while the sum is 30.

The square root of 857343 is about 925.9281829602. The cubic root of 857343 is about 94.9988180832.

The spelling of 857343 in words is "eight hundred fifty-seven thousand, three hundred forty-three".