791664 has 20 divisors (see below), whose sum is σ = 2045256. Its totient is φ = 263872.

The previous prime is 791663. The next prime is 791677. The reversal of 791664 is 466197.

It is a happy number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 791664.

It is not an unprimeable number, because it can be changed into a prime (791663) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 8199 + ... + 8294.

2⁷⁹¹⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

791664 is an abundant number, since it is smaller than the sum of its proper divisors (1253592).

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

791664 is a wasteful number, since it uses less digits than its factorization.

791664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16504 (or 16498 counting only the distinct ones).

The product of its digits is 9072, while the sum is 33.

The square root of 791664 is about 889.7550224640. The cubic root of 791664 is about 92.5082145128.

The spelling of 791664 in words is "seven hundred ninety-one thousand, six hundred sixty-four".