816199 has 8 divisors (see below), whose sum is σ = 853632. Its totient is φ = 779520.

The previous prime is 816191. The next prime is 816203. The reversal of 816199 is 991618.

816199 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 816199 - 2³ = 816191 is a prime.

It is a Duffinian number.

816199 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816191) 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, 3387 + ... + 3619.

It is an arithmetic number, because the mean of its divisors is an integer number (106704).

2⁸¹⁶¹⁹⁹ is an apocalyptic number.

816199 is a deficient number, since it is larger than the sum of its proper divisors (37433).

816199 is a wasteful number, since it uses less digits than its factorization.

816199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377.

The product of its digits is 3888, while the sum is 34.

The square root of 816199 is about 903.4373248876. The cubic root of 816199 is about 93.4541703011.

The spelling of 816199 in words is "eight hundred sixteen thousand, one hundred ninety-nine".