845385 has 8 divisors (see below), whose sum is σ = 1352640. Its totient is φ = 450864.

The previous prime is 845381. The next prime is 845387. The reversal of 845385 is 583548.

It is a happy number.

845385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 845385 - 2² = 845381 is a prime.

845385 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 845385.

It is not an unprimeable number, because it can be changed into a prime (845381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28165 + ... + 28194.

It is an arithmetic number, because the mean of its divisors is an integer number (169080).

2⁸⁴⁵³⁸⁵ is an apocalyptic number.

It is an amenable number.

845385 is a deficient number, since it is larger than the sum of its proper divisors (507255).

845385 is a wasteful number, since it uses less digits than its factorization.

845385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56367.

The product of its digits is 19200, while the sum is 33.

The square root of 845385 is about 919.4482040876. The cubic root of 845385 is about 94.5550755350. Note that the first 3 decimals are identical.

The spelling of 845385 in words is "eight hundred forty-five thousand, three hundred eighty-five".