8817985 has 16 divisors (see below), whose sum is σ = 12223872. Its totient is φ = 6035200.

The previous prime is 8817973. The next prime is 8818009. The reversal of 8817985 is 5897188.

It is a de Polignac number, because none of the positive numbers 2^k-8817985 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3781 + ... + 5650.

It is an arithmetic number, because the mean of its divisors is an integer number (763992).

Almost surely, 2^8817985 is an apocalyptic number.

8817985 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8817985 is a deficient number, since it is larger than the sum of its proper divisors (3405887).

8817985 is a wasteful number, since it uses less digits than its factorization.

8817985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9464.

The product of its digits is 161280, while the sum is 46.

The square root of 8817985 is about 2969.5092187094. The cubic root of 8817985 is about 206.5965755491.

The spelling of 8817985 in words is "eight million, eight hundred seventeen thousand, nine hundred eighty-five".