818001 has 12 divisors (see below), whose sum is σ = 1195012. Its totient is φ = 539136.

The previous prime is 817987. The next prime is 818011. The reversal of 818001 is 100818.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 176400 + 641601 = 420^2 + 801^2 .

It is not a de Polignac number, because 818001 - 2¹¹ = 815953 is a prime.

It is a Duffinian number.

818001 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (818011) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 405 + ... + 1341.

2⁸¹⁸⁰⁰¹ is an apocalyptic number.

It is an amenable number.

818001 is a deficient number, since it is larger than the sum of its proper divisors (377011).

818001 is a wasteful number, since it uses less digits than its factorization.

818001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040 (or 1037 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

The square root of 818001 is about 904.4340771997. The cubic root of 818001 is about 93.5228956294.

Adding to 818001 its reverse (100818), we get a palindrome (918819).

The spelling of 818001 in words is "eight hundred eighteen thousand, one".