8688516457 has 2 divisors, whose sum is σ = 8688516458. Its totient is φ = 8688516456.

The previous prime is 8688516367. The next prime is 8688516461. The reversal of 8688516457 is 7546158868.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5498074201 + 3190442256 = 74149^2 + 56484^2 .

It is a cyclic number.

It is not a de Polignac number, because 8688516457 - 2⁷ = 8688516329 is a prime.

It is not a weakly prime, because it can be changed into another prime (8688516467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4344258228 + 4344258229.

It is an arithmetic number, because the mean of its divisors is an integer number (4344258229).

Almost surely, 2^8688516457 is an apocalyptic number.

It is an amenable number.

8688516457 is a deficient number, since it is larger than the sum of its proper divisors (1).

8688516457 is an equidigital number, since it uses as much as digits as its factorization.

8688516457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12902400, while the sum is 58.

The square root of 8688516457 is about 93212.2119520828. The cubic root of 8688516457 is about 2055.8048013274.

The spelling of 8688516457 in words is "eight billion, six hundred eighty-eight million, five hundred sixteen thousand, four hundred fifty-seven".