856561126 has 8 divisors (see below), whose sum is σ = 1287594360. Its totient is φ = 427363008.

The previous prime is 856561087. The next prime is 856561129. The reversal of 856561126 is 621165658.

856561126 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856561129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 457611 + ... + 459478.

It is an arithmetic number, because the mean of its divisors is an integer number (160949295).

Almost surely, 2^856561126 is an apocalyptic number.

856561126 is a deficient number, since it is larger than the sum of its proper divisors (431033234).

856561126 is a wasteful number, since it uses less digits than its factorization.

856561126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917558.

The product of its digits is 86400, while the sum is 40.

The square root of 856561126 is about 29267.0655515718. The cubic root of 856561126 is about 949.6993050184.

The spelling of 856561126 in words is "eight hundred fifty-six million, five hundred sixty-one thousand, one hundred twenty-six".