847766898 has 120 divisors (see below), whose sum is σ = 2125241580. Its totient is φ = 252331200.

The previous prime is 847766891. The next prime is 847766917. The reversal of 847766898 is 898667748.

It can be written as a sum of positive squares in 2 ways, for example, as 647346249 + 200420649 = 25443^2 + 14157^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (847766891) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1195368 + ... + 1196076.

Almost surely, 2^847766898 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 847766898, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1062620790).

847766898 is an abundant number, since it is smaller than the sum of its proper divisors (1277474682).

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

847766898 is a wasteful number, since it uses less digits than its factorization.

847766898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806 (or 786 counting only the distinct ones).

The product of its digits is 32514048, while the sum is 63.

The square root of 847766898 is about 29116.4369042642. The cubic root of 847766898 is about 946.4379619827.

The spelling of 847766898 in words is "eight hundred forty-seven million, seven hundred sixty-six thousand, eight hundred ninety-eight".