2015985 has 8 divisors (see below), whose sum is σ = 3225600. Its totient is φ = 1075184.

The previous prime is 2015977. The next prime is 2015999. The reversal of 2015985 is 5895102.

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

It is a cyclic number.

It is not a de Polignac number, because 2015985 - 2³ = 2015977 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67185 + ... + 67214.

It is an arithmetic number, because the mean of its divisors is an integer number (403200).

2^2015985 is an apocalyptic number.

It is an amenable number.

2015985 is a deficient number, since it is larger than the sum of its proper divisors (1209615).

2015985 is a wasteful number, since it uses less digits than its factorization.

2015985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134407.

The product of its (nonzero) digits is 3600, while the sum is 30.

The square root of 2015985 is about 1419.8538657200. The cubic root of 2015985 is about 126.3268786409.

The spelling of 2015985 in words is "two million, fifteen thousand, nine hundred eighty-five".