815006 has 4 divisors (see below), whose sum is σ = 1222512. Its totient is φ = 407502.

The previous prime is 814991. The next prime is 815029. The reversal of 815006 is 600518.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 815006.

It is an unprimeable number.

815006 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 (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203750 + ... + 203753.

It is an arithmetic number, because the mean of its divisors is an integer number (305628).

2⁸¹⁵⁰⁰⁶ is an apocalyptic number.

815006 is a deficient number, since it is larger than the sum of its proper divisors (407506).

815006 is a wasteful number, since it uses less digits than its factorization.

815006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407505.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 815006 is about 902.7768273499. The cubic root of 815006 is about 93.4086155652.

The spelling of 815006 in words is "eight hundred fifteen thousand, six".