856336476 has 72 divisors (see below), whose sum is σ = 2109757104. Its totient is φ = 270233600.

The previous prime is 856336471. The next prime is 856336493. The reversal of 856336476 is 674633658.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856336471) 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 23 ways as a sum of consecutive naturals, for example, 534076 + ... + 535676.

It is an arithmetic number, because the mean of its divisors is an integer number (29302182).

Almost surely, 2^856336476 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 856336476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1054878552).

856336476 is an abundant number, since it is smaller than the sum of its proper divisors (1253420628).

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

856336476 is a wasteful number, since it uses less digits than its factorization.

856336476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1719 (or 1688 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 48.

The square root of 856336476 is about 29263.2273681493. The cubic root of 856336476 is about 949.6162719860.

The spelling of 856336476 in words is "eight hundred fifty-six million, three hundred thirty-six thousand, four hundred seventy-six".