8664985 has 16 divisors (see below), whose sum is σ = 12583296. Its totient is φ = 5591808.

The previous prime is 8664979. The next prime is 8664991. The reversal of 8664985 is 5894668.

It is an interprime number because it is at equal distance from previous prime (8664979) and next prime (8664991).

It is a cyclic number.

It is not a de Polignac number, because 8664985 - 2³ = 8664977 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6687 + ... + 7876.

It is an arithmetic number, because the mean of its divisors is an integer number (786456).

Almost surely, 2^8664985 is an apocalyptic number.

8664985 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8664985 is a deficient number, since it is larger than the sum of its proper divisors (3918311).

8664985 is a wasteful number, since it uses less digits than its factorization.

8664985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14592.

The product of its digits is 414720, while the sum is 46.

The square root of 8664985 is about 2943.6346580376. The cubic root of 8664985 is about 205.3947183811.

The spelling of 8664985 in words is "eight million, six hundred sixty-four thousand, nine hundred eighty-five".