800520013 has 4 divisors (see below), whose sum is σ = 802051168. Its totient is φ = 798988860.

The previous prime is 800519983. The next prime is 800520047. The reversal of 800520013 is 310025008.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 800520013 - 2¹³ = 800511821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (800520113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 764793 + ... + 765838.

It is an arithmetic number, because the mean of its divisors is an integer number (200512792).

Almost surely, 2^800520013 is an apocalyptic number.

It is an amenable number.

800520013 is a deficient number, since it is larger than the sum of its proper divisors (1531155).

800520013 is a wasteful number, since it uses less digits than its factorization.

800520013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1531154.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 800520013 is about 28293.4623720746. The cubic root of 800520013 is about 928.5188637013.

The spelling of 800520013 in words is "eight hundred million, five hundred twenty thousand, thirteen".