815005 has 16 divisors (see below), whose sum is σ = 1077120. Its totient is φ = 589248.

The previous prime is 814991. The next prime is 815029. The reversal of 815005 is 500518.

It is a cyclic number.

It is not a de Polignac number, because 815005 - 2⁹ = 814493 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1999 + ... + 2371.

It is an arithmetic number, because the mean of its divisors is an integer number (67320).

2⁸¹⁵⁰⁰⁵ is an apocalyptic number.

It is an amenable number.

815005 is a deficient number, since it is larger than the sum of its proper divisors (262115).

815005 is a wasteful number, since it uses less digits than its factorization.

815005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 815005 is about 902.7762735030. The cubic root of 815005 is about 93.4085773616.

The spelling of 815005 in words is "eight hundred fifteen thousand, five".