855806267 has 2 divisors, whose sum is σ = 855806268. Its totient is φ = 855806266.

The previous prime is 855806177. The next prime is 855806279. The reversal of 855806267 is 762608558.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-855806267 is a prime.

It is not a weakly prime, because it can be changed into another prime (855806767) 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, 427903133 + 427903134.

It is an arithmetic number, because the mean of its divisors is an integer number (427903134).

Almost surely, 2^855806267 is an apocalyptic number.

855806267 is a deficient number, since it is larger than the sum of its proper divisors (1).

855806267 is an equidigital number, since it uses as much as digits as its factorization.

855806267 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 806400, while the sum is 47.

The square root of 855806267 is about 29254.1666604947. The cubic root of 855806267 is about 949.4202434939.

The spelling of 855806267 in words is "eight hundred fifty-five million, eight hundred six thousand, two hundred sixty-seven".