791997 has 16 divisors (see below), whose sum is σ = 1112832. Its totient is φ = 500480.

The previous prime is 791993. The next prime is 792023. The reversal of 791997 is 799197.

It is a cyclic number.

It is not a de Polignac number, because 791997 - 2² = 791993 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (791993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5713 + ... + 5849.

It is an arithmetic number, because the mean of its divisors is an integer number (69552).

2⁷⁹¹⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

791997 is a deficient number, since it is larger than the sum of its proper divisors (320835).

791997 is a wasteful number, since it uses less digits than its factorization.

791997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228.

The product of its digits is 35721, while the sum is 42.

The square root of 791997 is about 889.9421329502. The cubic root of 791997 is about 92.5211833637.

The spelling of 791997 in words is "seven hundred ninety-one thousand, nine hundred ninety-seven".