791856 has 100 divisors (see below), whose sum is σ = 2520672. Its totient is φ = 238464.

The previous prime is 791851. The next prime is 791887. The reversal of 791856 is 658197.

It is a Harshad number since it is a multiple of its sum of digits (36).

Its product of digits (15120) is a multiple of the sum of its prime factors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 791856.

It is not an unprimeable number, because it can be changed into a prime (791851) by changing a digit.

791856 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 16825 + ... + 16871.

2⁷⁹¹⁸⁵⁶ 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 791856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1260336).

791856 is an abundant number, since it is smaller than the sum of its proper divisors (1728816).

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

791856 is a wasteful number, since it uses less digits than its factorization.

791856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80 (or 65 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 791856 is about 889.8629107902. The cubic root of 791856 is about 92.5156924923.

The spelling of 791856 in words is "seven hundred ninety-one thousand, eight hundred fifty-six".