812573 has 4 divisors (see below), whose sum is σ = 855360. Its totient is φ = 769788.

The previous prime is 812527. The next prime is 812587. The reversal of 812573 is 375218.

812573 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 812573 - 2¹⁴ = 796189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812503) 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, 21365 + ... + 21402.

It is an arithmetic number, because the mean of its divisors is an integer number (213840).

2⁸¹²⁵⁷³ is an apocalyptic number.

It is an amenable number.

812573 is a deficient number, since it is larger than the sum of its proper divisors (42787).

812573 is a wasteful number, since it uses less digits than its factorization.

812573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42786.

The product of its digits is 1680, while the sum is 26.

The square root of 812573 is about 901.4283110708. The cubic root of 812573 is about 93.3155734348.

The spelling of 812573 in words is "eight hundred twelve thousand, five hundred seventy-three".