816079 has 4 divisors (see below), whose sum is σ = 890280. Its totient is φ = 741880.

The previous prime is 816077. The next prime is 816091. The reversal of 816079 is 970618.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 816079 - 2¹ = 816077 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 816079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816077) by changing a digit.

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, 37084 + ... + 37105.

It is an arithmetic number, because the mean of its divisors is an integer number (222570).

2⁸¹⁶⁰⁷⁹ is an apocalyptic number.

816079 is a deficient number, since it is larger than the sum of its proper divisors (74201).

816079 is a wasteful number, since it uses less digits than its factorization.

816079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74200.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 816079 is about 903.3709094276. The cubic root of 816079 is about 93.4495901068.

The spelling of 816079 in words is "eight hundred sixteen thousand, seventy-nine".