816712 has 16 divisors (see below), whose sum is σ = 1649340. Its totient is φ = 376896.

The previous prime is 816709. The next prime is 816743. The reversal of 816712 is 217618.

It can be written as a sum of positive squares in 2 ways, for example, as 617796 + 198916 = 786^2 + 446^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3823 + ... + 4030.

2⁸¹⁶⁷¹² is an apocalyptic number.

It is an amenable number.

816712 is an abundant number, since it is smaller than the sum of its proper divisors (832628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

816712 is a wasteful number, since it uses less digits than its factorization.

816712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7872 (or 7868 counting only the distinct ones).

The product of its digits is 672, while the sum is 25.

The square root of 816712 is about 903.7211959449. The cubic root of 816712 is about 93.4737455716.

The spelling of 816712 in words is "eight hundred sixteen thousand, seven hundred twelve".