8617649988 has 12 divisors (see below), whose sum is σ = 20107850000. Its totient is φ = 2872549992.

The previous prime is 8617649987. The next prime is 8617650023. The reversal of 8617649988 is 8899467168.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (8617649987) 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, 359068738 + ... + 359068761.

Almost surely, 2^8617649988 is an apocalyptic number.

It is an amenable number.

8617649988 is an abundant number, since it is smaller than the sum of its proper divisors (11490200012).

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

8617649988 is a wasteful number, since it uses less digits than its factorization.

8617649988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718137506 (or 718137504 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 66.

The square root of 8617649988 is about 92831.2985366466. The cubic root of 8617649988 is about 2050.2002570977.

The spelling of 8617649988 in words is "eight billion, six hundred seventeen million, six hundred forty-nine thousand, nine hundred eighty-eight".