8784722251 has 2 divisors, whose sum is σ = 8784722252. Its totient is φ = 8784722250.

The previous prime is 8784722231. The next prime is 8784722329. The reversal of 8784722251 is 1522274878.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8784722251 - 2⁹ = 8784721739 is a prime.

It is not a weakly prime, because it can be changed into another prime (8784722231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4392361125 + 4392361126.

It is an arithmetic number, because the mean of its divisors is an integer number (4392361126).

Almost surely, 2^8784722251 is an apocalyptic number.

8784722251 is a deficient number, since it is larger than the sum of its proper divisors (1).

8784722251 is an equidigital number, since it uses as much as digits as its factorization.

8784722251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 501760, while the sum is 46.

The square root of 8784722251 is about 93726.8491468693. The cubic root of 8784722251 is about 2063.3647724290.

The spelling of 8784722251 in words is "eight billion, seven hundred eighty-four million, seven hundred twenty-two thousand, two hundred fifty-one".