8697745561 has 2 divisors, whose sum is σ = 8697745562. Its totient is φ = 8697745560.

The previous prime is 8697745531. The next prime is 8697745591. The reversal of 8697745561 is 1655477968.

It is a balanced prime because it is at equal distance from previous prime (8697745531) and next prime (8697745591).

It can be written as a sum of positive squares in only one way, i.e., 5878135561 + 2819610000 = 76669^2 + 53100^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8697745561 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8697745496 and 8697745505.

It is not a weakly prime, because it can be changed into another prime (8697745531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4348872780 + 4348872781.

It is an arithmetic number, because the mean of its divisors is an integer number (4348872781).

Almost surely, 2^8697745561 is an apocalyptic number.

It is an amenable number.

8697745561 is a deficient number, since it is larger than the sum of its proper divisors (1).

8697745561 is an equidigital number, since it uses as much as digits as its factorization.

8697745561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12700800, while the sum is 58.

The square root of 8697745561 is about 93261.7046863288. The cubic root of 8697745561 is about 2056.5324484641.

The spelling of 8697745561 in words is "eight billion, six hundred ninety-seven million, seven hundred forty-five thousand, five hundred sixty-one".