798747856 has 20 divisors (see below), whose sum is σ = 1638608292. Its totient is φ = 375881216.

The previous prime is 798747853. The next prime is 798747863. The reversal of 798747856 is 658747897.

It can be written as a sum of positive squares in 2 ways, for example, as 570254400 + 228493456 = 23880^2 + 15116^2 .

It is a junction number, because it is equal to n+sod(n) for n = 798747794 and 798747803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (798747853) 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, 1468015 + ... + 1468558.

Almost surely, 2^798747856 is an apocalyptic number.

It is an amenable number.

798747856 is an abundant number, since it is smaller than the sum of its proper divisors (839860436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

798747856 is a wasteful number, since it uses less digits than its factorization.

798747856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2936598 (or 2936592 counting only the distinct ones).

The product of its digits is 23708160, while the sum is 61.

The square root of 798747856 is about 28262.1275915314. The cubic root of 798747856 is about 927.8331856817.

The spelling of 798747856 in words is "seven hundred ninety-eight million, seven hundred forty-seven thousand, eight hundred fifty-six".