804247 has 4 divisors (see below), whose sum is σ = 808920. Its totient is φ = 799576.

The previous prime is 804239. The next prime is 804259. The reversal of 804247 is 742408.

804247 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.

It is a cyclic number.

It is not a de Polignac number, because 804247 - 2³ = 804239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (804847) 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, 2068 + ... + 2425.

It is an arithmetic number, because the mean of its divisors is an integer number (202230).

2⁸⁰⁴²⁴⁷ is an apocalyptic number.

804247 is a deficient number, since it is larger than the sum of its proper divisors (4673).

804247 is a wasteful number, since it uses less digits than its factorization.

804247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4672.

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 804247 is about 896.7981935753. The cubic root of 804247 is about 92.9957603956.

The spelling of 804247 in words is "eight hundred four thousand, two hundred forty-seven".