816808 has 8 divisors (see below), whose sum is σ = 1531530. Its totient is φ = 408400.

The previous prime is 816779. The next prime is 816811. The reversal of 816808 is 808618.

816808 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 806404 + 10404 = 898^2 + 102^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 816808.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51043 + ... + 51058.

2⁸¹⁶⁸⁰⁸ is an apocalyptic number.

It is an amenable number.

816808 is a deficient number, since it is larger than the sum of its proper divisors (714722).

816808 is a wasteful number, since it uses less digits than its factorization.

816808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102107 (or 102103 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 816808 is about 903.7743081102. The cubic root of 816808 is about 93.4774078696.

It can be divided in two parts, 81 and 6808, that added together give a square (6889 = 83²).

The spelling of 816808 in words is "eight hundred sixteen thousand, eight hundred eight".