8641617608 has 24 divisors (see below), whose sum is σ = 17545298850. Its totient is φ = 3988438272.

The previous prime is 8641617583. The next prime is 8641617619. The reversal of 8641617608 is 8067161468.

It can be written as a sum of positive squares in 3 ways, for example, as 5132003044 + 3509614564 = 71638^2 + 59242^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3194513 + ... + 3197216.

Almost surely, 2^8641617608 is an apocalyptic number.

It is an amenable number.

8641617608 is an abundant number, since it is smaller than the sum of its proper divisors (8903681242).

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

8641617608 is a wasteful number, since it uses less digits than its factorization.

8641617608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6391761 (or 6391744 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 8641617608 is about 92960.3012473604. The cubic root of 8641617608 is about 2052.0991868530.

The spelling of 8641617608 in words is "eight billion, six hundred forty-one million, six hundred seventeen thousand, six hundred eight".