805708223 has 2 divisors, whose sum is σ = 805708224. Its totient is φ = 805708222.

The previous prime is 805708219. The next prime is 805708231. The reversal of 805708223 is 322807508.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 805708223 - 2² = 805708219 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (805704223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402854111 + 402854112.

It is an arithmetic number, because the mean of its divisors is an integer number (402854112).

Almost surely, 2^805708223 is an apocalyptic number.

805708223 is a deficient number, since it is larger than the sum of its proper divisors (1).

805708223 is an equidigital number, since it uses as much as digits as its factorization.

805708223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 805708223 is about 28384.9999647701. Note that the first 4 decimals coincide. The cubic root of 805708223 is about 930.5204713742.

The spelling of 805708223 in words is "eight hundred five million, seven hundred eight thousand, two hundred twenty-three".