845013 has 16 divisors (see below), whose sum is σ = 1241856. Its totient is φ = 507840.

The previous prime is 845003. The next prime is 845017. The reversal of 845013 is 310548.

It is not a de Polignac number, because 845013 - 2⁸ = 844757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1603 + ... + 2063.

It is an arithmetic number, because the mean of its divisors is an integer number (77616).

2⁸⁴⁵⁰¹³ is an apocalyptic number.

It is an amenable number.

845013 is a deficient number, since it is larger than the sum of its proper divisors (396843).

845013 is a wasteful number, since it uses less digits than its factorization.

845013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 845013 is about 919.2458865831. The cubic root of 845013 is about 94.5412042815.

The spelling of 845013 in words is "eight hundred forty-five thousand, thirteen".