791621808 has 80 divisors (see below), whose sum is σ = 2109373920. Its totient is φ = 255633408.

The previous prime is 791621807. The next prime is 791621837. The reversal of 791621808 is 808126197.

791621808 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 791621808.

It is not an unprimeable number, because it can be changed into a prime (791621807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 476916 + ... + 478572.

It is an arithmetic number, because the mean of its divisors is an integer number (26367174).

Almost surely, 2^791621808 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 791621808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1054686960).

791621808 is an abundant number, since it is smaller than the sum of its proper divisors (1317752112).

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

791621808 is a wasteful number, since it uses less digits than its factorization.

791621808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1974 (or 1968 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 42.

The square root of 791621808 is about 28135.7745228384. The cubic root of 791621808 is about 925.0657106472.

The spelling of 791621808 in words is "seven hundred ninety-one million, six hundred twenty-one thousand, eight hundred eight".