857361 has 8 divisors (see below), whose sum is σ = 1210464. Its totient is φ = 537920.

The previous prime is 857357. The next prime is 857369. The reversal of 857361 is 163758.

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 857361 - 2² = 857357 is a prime.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 857361.

It is not an unprimeable number, because it can be changed into a prime (857369) 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, 8355 + ... + 8456.

It is an arithmetic number, because the mean of its divisors is an integer number (151308).

2⁸⁵⁷³⁶¹ is an apocalyptic number.

It is an amenable number.

857361 is a deficient number, since it is larger than the sum of its proper divisors (353103).

857361 is a wasteful number, since it uses less digits than its factorization.

857361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16831.

The product of its digits is 5040, while the sum is 30.

The square root of 857361 is about 925.9379028855. The cubic root of 857361 is about 94.9994829150. Note that the first 3 decimals are identical.

The spelling of 857361 in words is "eight hundred fifty-seven thousand, three hundred sixty-one".