805242671 has 2 divisors, whose sum is σ = 805242672. Its totient is φ = 805242670.

The previous prime is 805242631. The next prime is 805242709. The reversal of 805242671 is 176242508.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 805242671 - 2¹⁴ = 805226287 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 (805242631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402621335 + 402621336.

It is an arithmetic number, because the mean of its divisors is an integer number (402621336).

Almost surely, 2^805242671 is an apocalyptic number.

805242671 is a deficient number, since it is larger than the sum of its proper divisors (1).

805242671 is an equidigital number, since it uses as much as digits as its factorization.

805242671 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 805242671 is about 28376.7981104282. The cubic root of 805242671 is about 930.3412132926.

The spelling of 805242671 in words is "eight hundred five million, two hundred forty-two thousand, six hundred seventy-one".