798787 has 4 divisors (see below), whose sum is σ = 871416. Its totient is φ = 726160.

The previous prime is 798781. The next prime is 798799. The reversal of 798787 is 787897.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-798787 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (798781) 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, 36298 + ... + 36319.

It is an arithmetic number, because the mean of its divisors is an integer number (217854).

2⁷⁹⁸⁷⁸⁷ is an apocalyptic number.

798787 is a deficient number, since it is larger than the sum of its proper divisors (72629).

798787 is a wasteful number, since it uses less digits than its factorization.

798787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72628.

The product of its digits is 197568, while the sum is 46.

The square root of 798787 is about 893.7488461531. The cubic root of 798787 is about 92.7848342116.

The spelling of 798787 in words is "seven hundred ninety-eight thousand, seven hundred eighty-seven".