8520985 has 8 divisors (see below), whose sum is σ = 11154816. Its totient is φ = 6197040.

The previous prime is 8520979. The next prime is 8521003. The reversal of 8520985 is 5890258.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8520985 - 2¹³ = 8512793 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 (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77409 + ... + 77518.

It is an arithmetic number, because the mean of its divisors is an integer number (1394352).

Almost surely, 2^8520985 is an apocalyptic number.

It is an amenable number.

8520985 is a deficient number, since it is larger than the sum of its proper divisors (2633831).

8520985 is a wasteful number, since it uses less digits than its factorization.

8520985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154943.

The product of its (nonzero) digits is 28800, while the sum is 37.

The square root of 8520985 is about 2919.0726267087. The cubic root of 8520985 is about 204.2505651763.

The spelling of 8520985 in words is "eight million, five hundred twenty thousand, nine hundred eighty-five".