798566855 has 4 divisors (see below), whose sum is σ = 958280232. Its totient is φ = 638853480.

The previous prime is 798566849. The next prime is 798566861. The reversal of 798566855 is 558665897.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 558665897 = 19603 ⋅28499.

It is an interprime number because it is at equal distance from previous prime (798566849) and next prime (798566861).

It is not a de Polignac number, because 798566855 - 2²⁰ = 797518279 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 798566794 and 798566803.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79856681 + ... + 79856690.

It is an arithmetic number, because the mean of its divisors is an integer number (239570058).

Almost surely, 2^798566855 is an apocalyptic number.

798566855 is a deficient number, since it is larger than the sum of its proper divisors (159713377).

798566855 is a wasteful number, since it uses less digits than its factorization.

798566855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159713376.

The product of its digits is 18144000, while the sum is 59.

The square root of 798566855 is about 28258.9252272623. The cubic root of 798566855 is about 927.7630962201.

The spelling of 798566855 in words is "seven hundred ninety-eight million, five hundred sixty-six thousand, eight hundred fifty-five".