799691 has 4 divisors (see below), whose sum is σ = 841800. Its totient is φ = 757584.

The previous prime is 799679. The next prime is 799723. The reversal of 799691 is 196997.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 196997 = 29 ⋅6793.

It is a cyclic number.

It is not a de Polignac number, because 799691 - 2¹⁰ = 798667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (799621) 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 3 ways as a sum of consecutive naturals, for example, 21026 + ... + 21063.

It is an arithmetic number, because the mean of its divisors is an integer number (210450).

2⁷⁹⁹⁶⁹¹ is an apocalyptic number.

799691 is a deficient number, since it is larger than the sum of its proper divisors (42109).

799691 is a wasteful number, since it uses less digits than its factorization.

799691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42108.

The product of its digits is 30618, while the sum is 41.

The square root of 799691 is about 894.2544380656. The cubic root of 799691 is about 92.8198230418.

The spelling of 799691 in words is "seven hundred ninety-nine thousand, six hundred ninety-one".