8681547408 has 20 divisors (see below), whose sum is σ = 22427330928. Its totient is φ = 2893849120.

The previous prime is 8681547397. The next prime is 8681547421. The reversal of 8681547408 is 8047451868.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90432738 + ... + 90432833.

Almost surely, 2^8681547408 is an apocalyptic number.

It is an amenable number.

8681547408 is an abundant number, since it is smaller than the sum of its proper divisors (13745783520).

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

8681547408 is a wasteful number, since it uses less digits than its factorization.

8681547408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180865582 (or 180865576 counting only the distinct ones).

The product of its (nonzero) digits is 1720320, while the sum is 51.

The square root of 8681547408 is about 93174.8217492258. The cubic root of 8681547408 is about 2055.2550014188.

The spelling of 8681547408 in words is "eight billion, six hundred eighty-one million, five hundred forty-seven thousand, four hundred eight".