8727689057 has 2 divisors, whose sum is σ = 8727689058. Its totient is φ = 8727689056.

The previous prime is 8727689021. The next prime is 8727689101. The reversal of 8727689057 is 7509867278.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7822341136 + 905347921 = 88444^2 + 30089^2 .

It is a cyclic number.

It is not a de Polignac number, because 8727689057 - 2⁶ = 8727688993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8727688987 and 8727689005.

It is not a weakly prime, because it can be changed into another prime (8727680057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4363844528 + 4363844529.

It is an arithmetic number, because the mean of its divisors is an integer number (4363844529).

Almost surely, 2^8727689057 is an apocalyptic number.

It is an amenable number.

8727689057 is a deficient number, since it is larger than the sum of its proper divisors (1).

8727689057 is an equidigital number, since it uses as much as digits as its factorization.

8727689057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11854080, while the sum is 59.

The square root of 8727689057 is about 93422.1015445489. The cubic root of 8727689057 is about 2058.8897351586.

The spelling of 8727689057 in words is "eight billion, seven hundred twenty-seven million, six hundred eighty-nine thousand, fifty-seven".