816906 has 16 divisors (see below), whose sum is σ = 1645344. Its totient is φ = 270384.

The previous prime is 816899. The next prime is 816911. The reversal of 816906 is 609618.

816906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

816906 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 7 ways as a sum of consecutive naturals, for example, 645 + ... + 1431.

It is an arithmetic number, because the mean of its divisors is an integer number (102834).

2⁸¹⁶⁹⁰⁶ is an apocalyptic number.

816906 is an abundant number, since it is smaller than the sum of its proper divisors (828438).

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

816906 is a wasteful number, since it uses less digits than its factorization.

816906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 816906 is about 903.8285235596. The cubic root of 816906 is about 93.4811461694.

The spelling of 816906 in words is "eight hundred sixteen thousand, nine hundred six".