845345 has 4 divisors (see below), whose sum is σ = 1014420. Its totient is φ = 676272.

The previous prime is 845333. The next prime is 845347. The reversal of 845345 is 543548.

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

It can be written as a sum of positive squares in 2 ways, for example, as 279841 + 565504 = 529^2 + 752^2 .

It is a cyclic number.

It is not a de Polignac number, because 845345 - 2¹⁰ = 844321 is a prime.

It is a super-3 number, since 3×845345³ = 1812271327933315875, which contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84530 + ... + 84539.

It is an arithmetic number, because the mean of its divisors is an integer number (253605).

2⁸⁴⁵³⁴⁵ is an apocalyptic number.

It is an amenable number.

845345 is a deficient number, since it is larger than the sum of its proper divisors (169075).

845345 is a wasteful number, since it uses less digits than its factorization.

845345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169074.

The product of its digits is 9600, while the sum is 29.

The square root of 845345 is about 919.4264516534. The cubic root of 845345 is about 94.5535841976.

The spelling of 845345 in words is "eight hundred forty-five thousand, three hundred forty-five".