816797 has 8 divisors (see below), whose sum is σ = 845376. Its totient is φ = 788832.

The previous prime is 816779. The next prime is 816811. The reversal of 816797 is 797618.

It is a happy number.

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 816797 - 2¹² = 812701 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 816797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813797) 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, 4808 + ... + 4974.

It is an arithmetic number, because the mean of its divisors is an integer number (105672).

2⁸¹⁶⁷⁹⁷ is an apocalyptic number.

It is an amenable number.

816797 is a deficient number, since it is larger than the sum of its proper divisors (28579).

816797 is a wasteful number, since it uses less digits than its factorization.

816797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307.

The product of its digits is 21168, while the sum is 38.

The square root of 816797 is about 903.7682224996. The cubic root of 816797 is about 93.4769882458.

The spelling of 816797 in words is "eight hundred sixteen thousand, seven hundred ninety-seven".