804631 has 4 divisors (see below), whose sum is σ = 847000. Its totient is φ = 762264.

The previous prime is 804619. The next prime is 804653. The reversal of 804631 is 136408.

804631 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 804631 - 2⁹ = 804119 is a prime.

It is a super-2 number, since 2×804631² = 1294862092322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (804611) 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, 21156 + ... + 21193.

It is an arithmetic number, because the mean of its divisors is an integer number (211750).

2⁸⁰⁴⁶³¹ is an apocalyptic number.

804631 is a deficient number, since it is larger than the sum of its proper divisors (42369).

804631 is a wasteful number, since it uses less digits than its factorization.

804631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42368.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 804631 is about 897.0122630154. The cubic root of 804631 is about 93.0105587888.

Subtracting from 804631 its sum of digits (22), we obtain a square (804609 = 897²).

The spelling of 804631 in words is "eight hundred four thousand, six hundred thirty-one".