8688748821 has 8 divisors (see below), whose sum is σ = 11803583520. Its totient is φ = 5683206672.

The previous prime is 8688748819. The next prime is 8688748829. The reversal of 8688748821 is 1288478868.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8688748821 - 2¹ = 8688748819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8688748829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27322951 + ... + 27323268.

It is an arithmetic number, because the mean of its divisors is an integer number (1475447940).

Almost surely, 2^8688748821 is an apocalyptic number.

It is an amenable number.

8688748821 is a deficient number, since it is larger than the sum of its proper divisors (3114834699).

8688748821 is a wasteful number, since it uses less digits than its factorization.

8688748821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54646275.

The product of its digits is 11010048, while the sum is 60.

The square root of 8688748821 is about 93213.4583684137. The cubic root of 8688748821 is about 2055.8231278457.

The spelling of 8688748821 in words is "eight billion, six hundred eighty-eight million, seven hundred forty-eight thousand, eight hundred twenty-one".