805004773 has 2 divisors, whose sum is σ = 805004774. Its totient is φ = 805004772.

The previous prime is 805004771. The next prime is 805004777. The reversal of 805004773 is 377400508.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 784952289 + 20052484 = 28017^2 + 4478^2 .

It is a cyclic number.

It is not a de Polignac number, because 805004773 - 2¹ = 805004771 is a prime.

Together with 805004771, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (805004771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402502386 + 402502387.

It is an arithmetic number, because the mean of its divisors is an integer number (402502387).

Almost surely, 2^805004773 is an apocalyptic number.

It is an amenable number.

805004773 is a deficient number, since it is larger than the sum of its proper divisors (1).

805004773 is an equidigital number, since it uses as much as digits as its factorization.

805004773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 805004773 is about 28372.6060311703. The cubic root of 805004773 is about 930.2495853807.

The spelling of 805004773 in words is "eight hundred five million, four thousand, seven hundred seventy-three".