855984673 has 4 divisors (see below), whose sum is σ = 856977408. Its totient is φ = 854991940.

The previous prime is 855984653. The next prime is 855984691. The reversal of 855984673 is 376489558.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 855984673 - 2¹³ = 855976481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (855984643) 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 in 3 ways as a sum of consecutive naturals, for example, 495073 + ... + 496798.

It is an arithmetic number, because the mean of its divisors is an integer number (214244352).

Almost surely, 2^855984673 is an apocalyptic number.

It is an amenable number.

855984673 is a deficient number, since it is larger than the sum of its proper divisors (992735).

855984673 is an equidigital number, since it uses as much as digits as its factorization.

855984673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992734.

The product of its digits is 7257600, while the sum is 55.

The square root of 855984673 is about 29257.2157424455. The cubic root of 855984673 is about 949.4862126685.

The spelling of 855984673 in words is "eight hundred fifty-five million, nine hundred eighty-four thousand, six hundred seventy-three".