804513 has 4 divisors (see below), whose sum is σ = 1072688. Its totient is φ = 536340.

The previous prime is 804511. The next prime is 804521. The reversal of 804513 is 315408.

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 not a de Polignac number, because 804513 - 2¹ = 804511 is a prime.

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 804513.

It is not an unprimeable number, because it can be changed into a prime (804511) 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, 134083 + ... + 134088.

It is an arithmetic number, because the mean of its divisors is an integer number (268172).

2⁸⁰⁴⁵¹³ is an apocalyptic number.

It is an amenable number.

804513 is a deficient number, since it is larger than the sum of its proper divisors (268175).

804513 is a wasteful number, since it uses less digits than its factorization.

804513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268174.

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

The square root of 804513 is about 896.9464866981. The cubic root of 804513 is about 93.0060118671.

The spelling of 804513 in words is "eight hundred four thousand, five hundred thirteen".