845000 has 60 divisors (see below), whose sum is σ = 2143845. Its totient is φ = 312000.

The previous prime is 844999. The next prime is 845003. The reversal of 845000 is 548.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 8 ways, for example, as 329476 + 515524 = 574^2 + 718^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=650.

It is a self number, because there is not a number n which added to its sum of digits gives 845000.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 845000.

It is not an unprimeable number, because it can be changed into a prime (845003) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 64994 + ... + 65006.

2⁸⁴⁵⁰⁰⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 845000

845000 is an abundant number, since it is smaller than the sum of its proper divisors (1298845).

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

845000 is a wasteful number, since it uses less digits than its factorization.

845000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52 (or 20 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 845000 is about 919.2388155425. The cubic root of 845000 is about 94.5407194598.

Adding to 845000 its reverse (548), we get a palindrome (845548).

It can be divided in two parts, 8 and 45000, that multiplied together give a square (360000 = 600²).

The spelling of 845000 in words is "eight hundred forty-five thousand".