8666667 has 6 divisors (see below), whose sum is σ = 12518532. Its totient is φ = 5777772.

The previous prime is 8666627. The next prime is 8666681. The reversal of 8666667 is 7666668.

It is a happy number.

It is not a de Polignac number, because 8666667 - 2¹⁴ = 8650283 is a prime.

It is a super-2 number, since 2×8666667² = 150222233777778, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8666627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 481473 + ... + 481490.

It is an arithmetic number, because the mean of its divisors is an integer number (2086422).

Almost surely, 2^8666667 is an apocalyptic number.

8666667 is a deficient number, since it is larger than the sum of its proper divisors (3851865).

8666667 is a wasteful number, since it uses less digits than its factorization.

8666667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962969 (or 962966 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 8666667 is about 2943.9203453898. The cubic root of 8666667 is about 205.4080075584.

Subtracting from 8666667 its reverse (7666668), we obtain a palindrome (999999).

The spelling of 8666667 in words is "eight million, six hundred sixty-six thousand, six hundred sixty-seven".