8513985 has 16 divisors (see below), whose sum is σ = 13745664. Its totient is φ = 4499712.

The previous prime is 8513977. The next prime is 8513987. The reversal of 8513985 is 5893158.

It is not a de Polignac number, because 8513985 - 2³ = 8513977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8513987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 817 + ... + 4206.

It is an arithmetic number, because the mean of its divisors is an integer number (859104).

Almost surely, 2^8513985 is an apocalyptic number.

It is an amenable number.

8513985 is a deficient number, since it is larger than the sum of its proper divisors (5231679).

8513985 is a wasteful number, since it uses less digits than its factorization.

8513985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5144.

The product of its digits is 43200, while the sum is 39.

The square root of 8513985 is about 2917.8733694251. The cubic root of 8513985 is about 204.1946191540.

The spelling of 8513985 in words is "eight million, five hundred thirteen thousand, nine hundred eighty-five".