805047601 has 2 divisors, whose sum is σ = 805047602. Its totient is φ = 805047600.

The previous prime is 805047599. The next prime is 805047647. The reversal of 805047601 is 106740508.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 523311376 + 281736225 = 22876^2 + 16785^2 .

It is a cyclic number.

It is not a de Polignac number, because 805047601 - 2¹ = 805047599 is a prime.

Together with 805047599, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (805047301) 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 as a sum of consecutive naturals, namely, 402523800 + 402523801.

It is an arithmetic number, because the mean of its divisors is an integer number (402523801).

Almost surely, 2^805047601 is an apocalyptic number.

It is an amenable number.

805047601 is a deficient number, since it is larger than the sum of its proper divisors (1).

805047601 is an equidigital number, since it uses as much as digits as its factorization.

805047601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 805047601 is about 28373.3607632230. The cubic root of 805047601 is about 930.2660821867.

The spelling of 805047601 in words is "eight hundred five million, forty-seven thousand, six hundred one".