813104 has 20 divisors (see below), whose sum is σ = 1595880. Its totient is φ = 401280.

The previous prime is 813097. The next prime is 813107. The reversal of 813104 is 401318.

It is a happy number.

It is a super-2 number, since 2×813104² = 1322276229632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (813107) by changing a digit.

813104 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1139 + ... + 1709.

It is an arithmetic number, because the mean of its divisors is an integer number (79794).

2⁸¹³¹⁰⁴ is an apocalyptic number.

It is an amenable number.

813104 is a deficient number, since it is larger than the sum of its proper divisors (782776).

813104 is a wasteful number, since it uses less digits than its factorization.

813104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668 (or 662 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 813104 is about 901.7227955420. The cubic root of 813104 is about 93.3358956213.

The spelling of 813104 in words is "eight hundred thirteen thousand, one hundred four".