856727 has 6 divisors (see below), whose sum is σ = 898632. Its totient is φ = 815232.

The previous prime is 856721. The next prime is 856733. The reversal of 856727 is 727658.

856727 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (856721) and next prime (856733).

It is not a de Polignac number, because 856727 - 2⁴ = 856711 is a prime.

It is a d-powerful number, because it can be written as 8⁵ + 5 + 7³ + 6² + 2⁵ + 7⁷ .

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856721) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4343 + ... + 4535.

It is an arithmetic number, because the mean of its divisors is an integer number (149772).

2⁸⁵⁶⁷²⁷ is an apocalyptic number.

856727 is a deficient number, since it is larger than the sum of its proper divisors (41905).

856727 is an equidigital number, since it uses as much as digits as its factorization.

856727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409 (or 216 counting only the distinct ones).

The product of its digits is 23520, while the sum is 35.

The square root of 856727 is about 925.5954839994. The cubic root of 856727 is about 94.9760604498.

The spelling of 856727 in words is "eight hundred fifty-six thousand, seven hundred twenty-seven".