8722287997 has 2 divisors, whose sum is σ = 8722287998. Its totient is φ = 8722287996.

The previous prime is 8722287967. The next prime is 8722288013. The reversal of 8722287997 is 7997822278.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4705136836 + 4017151161 = 68594^2 + 63381^2 .

It is a cyclic number.

It is not a de Polignac number, because 8722287997 - 2¹⁹ = 8721763709 is a prime.

It is a super-2 number, since 2×8722287997² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8722287967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4361143998 + 4361143999.

It is an arithmetic number, because the mean of its divisors is an integer number (4361143999).

Almost surely, 2^8722287997 is an apocalyptic number.

It is an amenable number.

8722287997 is a deficient number, since it is larger than the sum of its proper divisors (1).

8722287997 is an equidigital number, since it uses as much as digits as its factorization.

8722287997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14224896, while the sum is 61.

The square root of 8722287997 is about 93393.1903138553. The cubic root of 8722287997 is about 2058.4649384154.

The spelling of 8722287997 in words is "eight billion, seven hundred twenty-two million, two hundred eighty-seven thousand, nine hundred ninety-seven".