8788721 has 8 divisors (see below), whose sum is σ = 9083520. Its totient is φ = 8497008.

The previous prime is 8788673. The next prime is 8788723. The reversal of 8788721 is 1278878.

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 8788721 - 2⁶ = 8788657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8788723) 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 7 ways as a sum of consecutive naturals, for example, 5960 + ... + 7286.

It is an arithmetic number, because the mean of its divisors is an integer number (1135440).

Almost surely, 2^8788721 is an apocalyptic number.

It is an amenable number.

8788721 is a deficient number, since it is larger than the sum of its proper divisors (294799).

8788721 is a wasteful number, since it uses less digits than its factorization.

8788721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1543.

The product of its digits is 50176, while the sum is 41.

The square root of 8788721 is about 2964.5777102313. The cubic root of 8788721 is about 206.3677801723.

The spelling of 8788721 in words is "eight million, seven hundred eighty-eight thousand, seven hundred twenty-one".