816873 has 8 divisors (see below), whose sum is σ = 1094208. Its totient is φ = 542064.

The previous prime is 816869. The next prime is 816883. The reversal of 816873 is 378618.

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

It is not a de Polignac number, because 816873 - 2² = 816869 is a prime.

It is a Curzon number.

816873 is a lucky number.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (816883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340 + ... + 1322.

It is an arithmetic number, because the mean of its divisors is an integer number (136776).

2⁸¹⁶⁸⁷³ is an apocalyptic number.

It is an amenable number.

816873 is a deficient number, since it is larger than the sum of its proper divisors (277335).

816873 is a wasteful number, since it uses less digits than its factorization.

816873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263.

The product of its digits is 8064, while the sum is 33.

The square root of 816873 is about 903.8102677000. The cubic root of 816873 is about 93.4798873875.

The spelling of 816873 in words is "eight hundred sixteen thousand, eight hundred seventy-three".