8987656545 has 192 divisors, whose sum is σ = 19408896000. Its totient is φ = 3756284928.

The previous prime is 8987656529. The next prime is 8987656547. The reversal of 8987656545 is 5456567898.

8987656545 is a `hidden beast` number, since 8 + 9 + 87 + 6 + 5 + 6 + 545 = 666.

8987656545 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 8987656545 - 2⁴ = 8987656529 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (8987656547) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 25035076 + ... + 25035434.

It is an arithmetic number, because the mean of its divisors is an integer number (101088000).

Almost surely, 2^8987656545 is an apocalyptic number.

It is an amenable number.

8987656545 is an abundant number, since it is smaller than the sum of its proper divisors (10421239455).

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

8987656545 is a wasteful number, since it uses less digits than its factorization.

8987656545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532 (or 529 counting only the distinct ones).

The product of its digits is 72576000, while the sum is 63.

The square root of 8987656545 is about 94803.2517638504. The cubic root of 8987656545 is about 2079.1324464622.

The spelling of 8987656545 in words is "eight billion, nine hundred eighty-seven million, six hundred fifty-six thousand, five hundred forty-five".