845485 has 4 divisors (see below), whose sum is σ = 1014588. Its totient is φ = 676384.

The previous prime is 845459. The next prime is 845489. The reversal of 845485 is 584548.

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 174724 + 670761 = 418^2 + 819^2 .

It is a cyclic number.

It is not a de Polignac number, because 845485 - 2⁷ = 845357 is a prime.

It is a Duffinian number.

845485 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 845485.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845489) 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, 84544 + ... + 84553.

It is an arithmetic number, because the mean of its divisors is an integer number (253647).

2⁸⁴⁵⁴⁸⁵ is an apocalyptic number.

It is an amenable number.

845485 is a deficient number, since it is larger than the sum of its proper divisors (169103).

845485 is a wasteful number, since it uses less digits than its factorization.

845485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169102.

The product of its digits is 25600, while the sum is 34.

The square root of 845485 is about 919.5025829219. The cubic root of 845485 is about 94.5588036725.

It can be divided in two parts, 84548 and 5, that multiplied together give a triangular number (422740 = T₉₁₉).

The spelling of 845485 in words is "eight hundred forty-five thousand, four hundred eighty-five".