8987376640 has 264 divisors, whose sum is σ = 24110548560. Its totient is φ = 3211591680.

The previous prime is 8987376589. The next prime is 8987376649. The reversal of 8987376640 is 466737898.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8987376649) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 55137199 + ... + 55137361.

Almost surely, 2^8987376640 is an apocalyptic number.

8987376640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8987376640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12055274280).

8987376640 is an abundant number, since it is smaller than the sum of its proper divisors (15123171920).

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

8987376640 is a wasteful number, since it uses less digits than its factorization.

8987376640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299 (or 270 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 58.

The square root of 8987376640 is about 94801.7755107994. The cubic root of 8987376640 is about 2079.1108625782.

The spelling of 8987376640 in words is "eight billion, nine hundred eighty-seven million, three hundred seventy-six thousand, six hundred forty".