804720313 has 4 divisors (see below), whose sum is σ = 852056820. Its totient is φ = 757383808.

The previous prime is 804720311. The next prime is 804720337. The reversal of 804720313 is 313027408.

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

It can be written as a sum of positive squares in 2 ways, for example, as 546250384 + 258469929 = 23372^2 + 16077^2 .

It is a cyclic number.

It is not a de Polignac number, because 804720313 - 2¹ = 804720311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (804720311) 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, 23668228 + ... + 23668261.

It is an arithmetic number, because the mean of its divisors is an integer number (213014205).

Almost surely, 2^804720313 is an apocalyptic number.

It is an amenable number.

804720313 is a deficient number, since it is larger than the sum of its proper divisors (47336507).

804720313 is a wasteful number, since it uses less digits than its factorization.

804720313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47336506.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 804720313 is about 28367.5926542948. The cubic root of 804720313 is about 930.1400001207.

The spelling of 804720313 in words is "eight hundred four million, seven hundred twenty thousand, three hundred thirteen".