856328604 has 12 divisors (see below), whose sum is σ = 1998100104. Its totient is φ = 285442864.

The previous prime is 856328587. The next prime is 856328609. The reversal of 856328604 is 406823658.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856328609) 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 in 3 ways as a sum of consecutive naturals, for example, 35680347 + ... + 35680370.

It is an arithmetic number, because the mean of its divisors is an integer number (166508342).

Almost surely, 2^856328604 is an apocalyptic number.

It is an amenable number.

856328604 is an abundant number, since it is smaller than the sum of its proper divisors (1141771500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

856328604 is a wasteful number, since it uses less digits than its factorization.

856328604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71360724 (or 71360722 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The square root of 856328604 is about 29263.0928645624. The cubic root of 856328604 is about 949.6133621476.

The spelling of 856328604 in words is "eight hundred fifty-six million, three hundred twenty-eight thousand, six hundred four".