816933 has 8 divisors (see below), whose sum is σ = 1173088. Its totient is φ = 502704.

The previous prime is 816929. The next prime is 816941. The reversal of 816933 is 339618.

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

It is not a de Polignac number, because 816933 - 2² = 816929 is a prime.

It is a Duffinian number.

816933 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 816933.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10435 + ... + 10512.

It is an arithmetic number, because the mean of its divisors is an integer number (146636).

2⁸¹⁶⁹³³ is an apocalyptic number.

It is an amenable number.

816933 is a deficient number, since it is larger than the sum of its proper divisors (356155).

816933 is a wasteful number, since it uses less digits than its factorization.

816933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20963.

The product of its digits is 3888, while the sum is 30.

The square root of 816933 is about 903.8434598978. The cubic root of 816933 is about 93.4821760566.

The spelling of 816933 in words is "eight hundred sixteen thousand, nine hundred thirty-three".