856734 has 8 divisors (see below), whose sum is σ = 1713480. Its totient is φ = 285576.

The previous prime is 856733. The next prime is 856759. The reversal of 856734 is 437658.

856734 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

856734 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 856695 and 856704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71389 + ... + 71400.

It is an arithmetic number, because the mean of its divisors is an integer number (214185).

2⁸⁵⁶⁷³⁴ is an apocalyptic number.

856734 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

856734 is a wasteful number, since it uses less digits than its factorization.

856734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142794.

The product of its digits is 20160, while the sum is 33.

The square root of 856734 is about 925.5992653411. The cubic root of 856734 is about 94.9763191206.

The spelling of 856734 in words is "eight hundred fifty-six thousand, seven hundred thirty-four".