819716 has 12 divisors (see below), whose sum is σ = 1449420. Its totient is φ = 405600.

The previous prime is 819701. The next prime is 819719. The reversal of 819716 is 617918.

It can be written as a sum of positive squares in 2 ways, for example, as 802816 + 16900 = 896^2 + 130^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 819716.

It is not an unprimeable number, because it can be changed into a prime (819719) by changing a digit.

819716 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 611 + ... + 1418.

It is an arithmetic number, because the mean of its divisors is an integer number (120785).

2⁸¹⁹⁷¹⁶ is an apocalyptic number.

It is an amenable number.

819716 is a deficient number, since it is larger than the sum of its proper divisors (629704).

819716 is a wasteful number, since it uses less digits than its factorization.

819716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2134 (or 2132 counting only the distinct ones).

The product of its digits is 3024, while the sum is 32.

The square root of 819716 is about 905.3816874667. The cubic root of 819716 is about 93.5882092436.

The spelling of 819716 in words is "eight hundred nineteen thousand, seven hundred sixteen".