864834 has 8 divisors (see below), whose sum is σ = 1729680. Its totient is φ = 288276.

The previous prime is 864817. The next prime is 864883. The reversal of 864834 is 438468.

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

864834 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 864795 and 864804.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72064 + ... + 72075.

It is an arithmetic number, because the mean of its divisors is an integer number (216210).

2⁸⁶⁴⁸³⁴ is an apocalyptic number.

864834 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.

864834 is a wasteful number, since it uses less digits than its factorization.

864834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144144.

The product of its digits is 18432, while the sum is 33.

The square root of 864834 is about 929.9645154521. The cubic root of 864834 is about 95.2746989220.

The spelling of 864834 in words is "eight hundred sixty-four thousand, eight hundred thirty-four".