797805 has 12 divisors (see below), whose sum is σ = 1382940. Its totient is φ = 425472.

The previous prime is 797773. The next prime is 797813. The reversal of 797805 is 508797.

797805 is nontrivially palindromic in base 14.

797805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 412164 + 385641 = 642^2 + 621^2 .

It is not a de Polignac number, because 797805 - 2⁵ = 797773 is a prime.

It is a Curzon number.

797805 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 797805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8820 + ... + 8909.

It is an arithmetic number, because the mean of its divisors is an integer number (115245).

2⁷⁹⁷⁸⁰⁵ is an apocalyptic number.

It is an amenable number.

797805 is a deficient number, since it is larger than the sum of its proper divisors (585135).

797805 is a wasteful number, since it uses less digits than its factorization.

797805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17740 (or 17737 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The square root of 797805 is about 893.1993058663. The cubic root of 797805 is about 92.7467965076.

The spelling of 797805 in words is "seven hundred ninety-seven thousand, eight hundred five".