845790 has 48 divisors (see below), whose sum is σ = 2240784. Its totient is φ = 204160.

The previous prime is 845777. The next prime is 845809. The reversal of 845790 is 97548.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3514 + ... + 3746.

It is an arithmetic number, because the mean of its divisors is an integer number (46683).

2⁸⁴⁵⁷⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 845790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1120392).

845790 is an abundant number, since it is smaller than the sum of its proper divisors (1394994).

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

845790 is a wasteful number, since it uses less digits than its factorization.

845790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 845790 is about 919.6684185075. The cubic root of 845790 is about 94.5701726769.

The spelling of 845790 in words is "eight hundred forty-five thousand, seven hundred ninety".