802845 has 32 divisors (see below), whose sum is σ = 1507200. Its totient is φ = 404352.

The previous prime is 802831. The next prime is 802873. The reversal of 802845 is 548208.

It is not a de Polignac number, because 802845 - 2⁴ = 802829 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2409 + ... + 2721.

It is an arithmetic number, because the mean of its divisors is an integer number (47100).

2⁸⁰²⁸⁴⁵ is an apocalyptic number.

It is an amenable number.

802845 is a deficient number, since it is larger than the sum of its proper divisors (704355).

802845 is a wasteful number, since it uses less digits than its factorization.

802845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346 (or 340 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 802845 is about 896.0161828896. The cubic root of 802845 is about 92.9416908162.

The spelling of 802845 in words is "eight hundred two thousand, eight hundred forty-five".