855687323 has 2 divisors, whose sum is σ = 855687324. Its totient is φ = 855687322.

The previous prime is 855687319. The next prime is 855687337. The reversal of 855687323 is 323786558.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 855687323 - 2² = 855687319 is a prime.

It is not a weakly prime, because it can be changed into another prime (855687353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427843661 + 427843662.

It is an arithmetic number, because the mean of its divisors is an integer number (427843662).

Almost surely, 2^855687323 is an apocalyptic number.

855687323 is a deficient number, since it is larger than the sum of its proper divisors (1).

855687323 is an equidigital number, since it uses as much as digits as its factorization.

855687323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1209600, while the sum is 47.

The square root of 855687323 is about 29252.1336486760. The cubic root of 855687323 is about 949.3762564850.

The spelling of 855687323 in words is "eight hundred fifty-five million, six hundred eighty-seven thousand, three hundred twenty-three".