816834 has 8 divisors (see below), whose sum is σ = 1633680. Its totient is φ = 272276.

The previous prime is 816821. The next prime is 816839. The reversal of 816834 is 438618.

It is a happy number.

816834 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.

816834 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (816839) by changing a digit.

816834 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68064 + ... + 68075.

It is an arithmetic number, because the mean of its divisors is an integer number (204210).

2⁸¹⁶⁸³⁴ is an apocalyptic number.

816834 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.

816834 is a wasteful number, since it uses less digits than its factorization.

816834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136144.

The product of its digits is 4608, while the sum is 30.

The square root of 816834 is about 903.7886921178. The cubic root of 816834 is about 93.4783996925.

The spelling of 816834 in words is "eight hundred sixteen thousand, eight hundred thirty-four".