856653476 has 48 divisors (see below), whose sum is σ = 1755062400. Its totient is φ = 365712480.

The previous prime is 856653451. The next prime is 856653503. The reversal of 856653476 is 674356658.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 400931 + ... + 403061.

It is an arithmetic number, because the mean of its divisors is an integer number (36563800).

Almost surely, 2^856653476 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 856653476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (877531200).

856653476 is an abundant number, since it is smaller than the sum of its proper divisors (898408924).

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

856653476 is a wasteful number, since it uses less digits than its factorization.

856653476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2449 (or 2433 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 50.

The square root of 856653476 is about 29268.6432210309. The cubic root of 856653476 is about 949.7334343512.

The spelling of 856653476 in words is "eight hundred fifty-six million, six hundred fifty-three thousand, four hundred seventy-six".