8681864208 has 40 divisors (see below), whose sum is σ = 22434912288. Its totient is φ = 2893082112.

The previous prime is 8681864197. The next prime is 8681864209. The reversal of 8681864208 is 8024681868.

It is a super-2 number, since 2×8681864208² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8681864209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144760 + ... + 195752.

Almost surely, 2^8681864208 is an apocalyptic number.

It is an amenable number.

8681864208 is an abundant number, since it is smaller than the sum of its proper divisors (13753048080).

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

8681864208 is a wasteful number, since it uses less digits than its factorization.

8681864208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54551 (or 54545 counting only the distinct ones).

The product of its (nonzero) digits is 1179648, while the sum is 51.

The square root of 8681864208 is about 93176.5217638006. The cubic root of 8681864208 is about 2055.2800006820.

The spelling of 8681864208 in words is "eight billion, six hundred eighty-one million, eight hundred sixty-four thousand, two hundred eight".