804740656 has 40 divisors (see below), whose sum is σ = 1620432000. Its totient is φ = 386741760.

The previous prime is 804740647. The next prime is 804740659. The reversal of 804740656 is 656047408.

It is not an unprimeable number, because it can be changed into a prime (804740659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68460 + ... + 79348.

It is an arithmetic number, because the mean of its divisors is an integer number (40510800).

Almost surely, 2^804740656 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 804740656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (810216000).

804740656 is an abundant number, since it is smaller than the sum of its proper divisors (815691344).

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

804740656 is a wasteful number, since it uses less digits than its factorization.

804740656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11077 (or 11071 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 804740656 is about 28367.9512125920. The cubic root of 804740656 is about 930.1478379074.

The spelling of 804740656 in words is "eight hundred four million, seven hundred forty thousand, six hundred fifty-six".