818004 has 24 divisors (see below), whose sum is σ = 2082528. Its totient is φ = 247840.

The previous prime is 817987. The next prime is 818011. The reversal of 818004 is 400818.

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

818004 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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2967 + ... + 3230.

It is an arithmetic number, because the mean of its divisors is an integer number (86772).

2⁸¹⁸⁰⁰⁴ is an apocalyptic number.

It is an amenable number.

818004 is an abundant number, since it is smaller than the sum of its proper divisors (1264524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

818004 is a wasteful number, since it uses less digits than its factorization.

818004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6215 (or 6213 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 818004 is about 904.4357356938. The cubic root of 818004 is about 93.5230099602.

The spelling of 818004 in words is "eight hundred eighteen thousand, four".