8487854721 has 24 divisors (see below), whose sum is σ = 12425038080. Its totient is φ = 5582618496.

The previous prime is 8487854701. The next prime is 8487854783. The reversal of 8487854721 is 1274587848.

8487854721 is a `hidden beast` number, since 8 + 4 + 8 + 78 + 547 + 21 = 666.

It is not a de Polignac number, because 8487854721 - 2⁵ = 8487854689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8487854701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1100340 + ... + 1108026.

It is an arithmetic number, because the mean of its divisors is an integer number (517709920).

Almost surely, 2^8487854721 is an apocalyptic number.

It is an amenable number.

8487854721 is a deficient number, since it is larger than the sum of its proper divisors (3937183359).

8487854721 is a wasteful number, since it uses less digits than its factorization.

8487854721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9325 (or 9322 counting only the distinct ones).

The product of its digits is 4014080, while the sum is 54.

The square root of 8487854721 is about 92129.5540041305. The cubic root of 8487854721 is about 2039.8550711630.

The spelling of 8487854721 in words is "eight billion, four hundred eighty-seven million, eight hundred fifty-four thousand, seven hundred twenty-one".