8667866489 has 2 divisors, whose sum is σ = 8667866490. Its totient is φ = 8667866488.

The previous prime is 8667866423. The next prime is 8667866527. The reversal of 8667866489 is 9846687668.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7071464464 + 1596402025 = 84092^2 + 39955^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8667866489 is a prime.

It is a super-2 number, since 2×8667866489² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8667866419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4333933244 + 4333933245.

It is an arithmetic number, because the mean of its divisors is an integer number (4333933245).

Almost surely, 2^8667866489 is an apocalyptic number.

It is an amenable number.

8667866489 is a deficient number, since it is larger than the sum of its proper divisors (1).

8667866489 is an equidigital number, since it uses as much as digits as its factorization.

8667866489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 167215104, while the sum is 68.

The square root of 8667866489 is about 93101.3774817537. The cubic root of 8667866489 is about 2054.1748345341.

The spelling of 8667866489 in words is "eight billion, six hundred sixty-seven million, eight hundred sixty-six thousand, four hundred eighty-nine".