799787 has 4 divisors (see below), whose sum is σ = 819336. Its totient is φ = 780240.

The previous prime is 799759. The next prime is 799789. The reversal of 799787 is 787997.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 787997 = 7 ⋅112571.

It is a cyclic number.

It is not a de Polignac number, because 799787 - 2⁶ = 799723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (799789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9713 + ... + 9794.

It is an arithmetic number, because the mean of its divisors is an integer number (204834).

2⁷⁹⁹⁷⁸⁷ is an apocalyptic number.

799787 is a deficient number, since it is larger than the sum of its proper divisors (19549).

799787 is a wasteful number, since it uses less digits than its factorization.

799787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19548.

The product of its digits is 222264, while the sum is 47.

The square root of 799787 is about 894.3081124534. The cubic root of 799787 is about 92.8235371208.

The spelling of 799787 in words is "seven hundred ninety-nine thousand, seven hundred eighty-seven".