8688140221 has 8 divisors (see below), whose sum is σ = 9068540544. Its totient is φ = 8307961200.

The previous prime is 8688140213. The next prime is 8688140273. The reversal of 8688140221 is 1220418868.

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

It is a cyclic number.

It is not a de Polignac number, because 8688140221 - 2³ = 8688140213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8688140821) 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, 27571 + ... + 134671.

It is an arithmetic number, because the mean of its divisors is an integer number (1133567568).

Almost surely, 2^8688140221 is an apocalyptic number.

It is an amenable number.

8688140221 is a deficient number, since it is larger than the sum of its proper divisors (380400323).

8688140221 is a wasteful number, since it uses less digits than its factorization.

8688140221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110651.

The product of its (nonzero) digits is 49152, while the sum is 40.

The square root of 8688140221 is about 93210.1937611976. The cubic root of 8688140221 is about 2055.7751269503.

The spelling of 8688140221 in words is "eight billion, six hundred eighty-eight million, one hundred forty thousand, two hundred twenty-one".