8788321 has 2 divisors, whose sum is σ = 8788322. Its totient is φ = 8788320.

The previous prime is 8788319. The next prime is 8788327. The reversal of 8788321 is 1238878.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8785296 + 3025 = 2964^2 + 55^2 .

It is a cyclic number.

It is not a de Polignac number, because 8788321 - 2¹ = 8788319 is a prime.

Together with 8788319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (8788327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4394160 + 4394161.

It is an arithmetic number, because the mean of its divisors is an integer number (4394161).

Almost surely, 2^8788321 is an apocalyptic number.

It is an amenable number.

8788321 is a deficient number, since it is larger than the sum of its proper divisors (1).

8788321 is an equidigital number, since it uses as much as digits as its factorization.

8788321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21504, while the sum is 37.

The square root of 8788321 is about 2964.5102462296. The cubic root of 8788321 is about 206.3646493275.

The spelling of 8788321 in words is "eight million, seven hundred eighty-eight thousand, three hundred twenty-one".