8509868 has 6 divisors (see below), whose sum is σ = 14892276. Its totient is φ = 4254932.

The previous prime is 8509861. The next prime is 8509873. The reversal of 8509868 is 8689058.

It is not an unprimeable number, because it can be changed into a prime (8509861) 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 as a sum of consecutive naturals, namely, 1063730 + ... + 1063737.

It is an arithmetic number, because the mean of its divisors is an integer number (2482046).

Almost surely, 2^8509868 is an apocalyptic number.

It is an amenable number.

8509868 is a deficient number, since it is larger than the sum of its proper divisors (6382408).

8509868 is a wasteful number, since it uses less digits than its factorization.

8509868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2127471 (or 2127469 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 44.

The square root of 8509868 is about 2917.1678045666. The cubic root of 8509868 is about 204.1617005780.

The spelling of 8509868 in words is "eight million, five hundred nine thousand, eight hundred sixty-eight".