845798 has 4 divisors (see below), whose sum is σ = 1268700. Its totient is φ = 422898.

The previous prime is 845777. The next prime is 845809. The reversal of 845798 is 897548.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

845798 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 (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211448 + ... + 211451.

It is an arithmetic number, because the mean of its divisors is an integer number (317175).

2⁸⁴⁵⁷⁹⁸ is an apocalyptic number.

845798 is a deficient number, since it is larger than the sum of its proper divisors (422902).

845798 is a wasteful number, since it uses less digits than its factorization.

845798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422901.

The product of its digits is 80640, while the sum is 41.

The square root of 845798 is about 919.6727678908. The cubic root of 845798 is about 94.5704708435.

The spelling of 845798 in words is "eight hundred forty-five thousand, seven hundred ninety-eight".