813001 has 16 divisors (see below), whose sum is σ = 989824. Its totient is φ = 653184.

The previous prime is 812969. The next prime is 813013. The reversal of 813001 is 100318.

It is not a de Polignac number, because 813001 - 2⁵ = 812969 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (813041) 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 15 ways as a sum of consecutive naturals, for example, 11101 + ... + 11173.

It is an arithmetic number, because the mean of its divisors is an integer number (61864).

2⁸¹³⁰⁰¹ is an apocalyptic number.

It is an amenable number.

813001 is a deficient number, since it is larger than the sum of its proper divisors (176823).

813001 is a wasteful number, since it uses less digits than its factorization.

813001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 813001 is about 901.6656808374. The cubic root of 813001 is about 93.3319543447.

Adding to 813001 its reverse (100318), we get a palindrome (913319).

The spelling of 813001 in words is "eight hundred thirteen thousand, one".