8642987712 has 70 divisors (see below), whose sum is σ = 25620538548. Its totient is φ = 2880994176.

The previous prime is 8642987699. The next prime is 8642987713. The reversal of 8642987712 is 2177892468.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (8642987713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 828438 + ... + 838805.

Almost surely, 2^8642987712 is an apocalyptic number.

It is an amenable number.

8642987712 is an abundant number, since it is smaller than the sum of its proper divisors (16977550836).

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

8642987712 is a wasteful number, since it uses less digits than its factorization.

8642987712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1667267 (or 1667248 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The square root of 8642987712 is about 92967.6702515450. The cubic root of 8642987712 is about 2052.2076326269.

The spelling of 8642987712 in words is "eight billion, six hundred forty-two million, nine hundred eighty-seven thousand, seven hundred twelve".