8697728437 has 2 divisors, whose sum is σ = 8697728438. Its totient is φ = 8697728436.

The previous prime is 8697728419. The next prime is 8697728467. The reversal of 8697728437 is 7348277968.

8697728437 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4437424996 + 4260303441 = 66614^2 + 65271^2 .

It is a cyclic number.

It is not a de Polignac number, because 8697728437 - 2¹⁹ = 8697204149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8697728467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4348864218 + 4348864219.

It is an arithmetic number, because the mean of its divisors is an integer number (4348864219).

Almost surely, 2^8697728437 is an apocalyptic number.

It is an amenable number.

8697728437 is a deficient number, since it is larger than the sum of its proper divisors (1).

8697728437 is an equidigital number, since it uses as much as digits as its factorization.

8697728437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28449792, while the sum is 61.

The square root of 8697728437 is about 93261.6128801127. The cubic root of 8697728437 is about 2056.5310988391.

The spelling of 8697728437 in words is "eight billion, six hundred ninety-seven million, seven hundred twenty-eight thousand, four hundred thirty-seven".