816878 has 8 divisors (see below), whose sum is σ = 1230768. Its totient is φ = 406624.

The previous prime is 816869. The next prime is 816883. The reversal of 816878 is 878618.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251 + ... + 1302.

It is an arithmetic number, because the mean of its divisors is an integer number (153846).

2⁸¹⁶⁸⁷⁸ is an apocalyptic number.

816878 is a deficient number, since it is larger than the sum of its proper divisors (413890).

816878 is a wasteful number, since it uses less digits than its factorization.

816878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1818.

The product of its digits is 21504, while the sum is 38.

The square root of 816878 is about 903.8130337631. The cubic root of 816878 is about 93.4800781142.

The spelling of 816878 in words is "eight hundred sixteen thousand, eight hundred seventy-eight".