804805667 has 4 divisors (see below), whose sum is σ = 847163880. Its totient is φ = 762447456.

The previous prime is 804805649. The next prime is 804805669. The reversal of 804805667 is 766508408.

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

It is a cyclic number.

It is not a de Polignac number, because 804805667 - 2¹⁴ = 804789283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (804805669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21179078 + ... + 21179115.

It is an arithmetic number, because the mean of its divisors is an integer number (211790970).

Almost surely, 2^804805667 is an apocalyptic number.

804805667 is a deficient number, since it is larger than the sum of its proper divisors (42358213).

804805667 is a wasteful number, since it uses less digits than its factorization.

804805667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42358212.

The product of its (nonzero) digits is 322560, while the sum is 44.

The square root of 804805667 is about 28369.0970423805. The cubic root of 804805667 is about 930.1728845741.

The spelling of 804805667 in words is "eight hundred four million, eight hundred five thousand, six hundred sixty-seven".