791353856 has 80 divisors (see below), whose sum is σ = 1649894400. Its totient is φ = 378728448.

The previous prime is 791353853. The next prime is 791353879. The reversal of 791353856 is 658353197.

It is a self number, because there is not a number n which added to its sum of digits gives 791353856.

It is not an unprimeable number, because it can be changed into a prime (791353853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3310985 + ... + 3311223.

It is an arithmetic number, because the mean of its divisors is an integer number (20623680).

Almost surely, 2^791353856 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 791353856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (824947200).

791353856 is an abundant number, since it is smaller than the sum of its proper divisors (858540544).

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

791353856 is a wasteful number, since it uses less digits than its factorization.

791353856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509 (or 493 counting only the distinct ones).

The product of its digits is 680400, while the sum is 47.

The square root of 791353856 is about 28131.0123529176. The cubic root of 791353856 is about 924.9613252883.

The spelling of 791353856 in words is "seven hundred ninety-one million, three hundred fifty-three thousand, eight hundred fifty-six".