791680 has 32 divisors (see below), whose sum is σ = 1894140. Its totient is φ = 316416.

The previous prime is 791677. The next prime is 791699. The reversal of 791680 is 86197.

It can be written as a sum of positive squares in 2 ways, for example, as 788544 + 3136 = 888^2 + 56^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22 + ... + 1258.

2⁷⁹¹⁶⁸⁰ 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 791680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (947070).

791680 is an abundant number, since it is smaller than the sum of its proper divisors (1102460).

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

791680 is a wasteful number, since it uses less digits than its factorization.

791680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256 (or 1244 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 791680 is about 889.7640136576. The cubic root of 791680 is about 92.5088377239.

The spelling of 791680 in words is "seven hundred ninety-one thousand, six hundred eighty".