5815985 has 16 divisors (see below), whose sum is σ = 8055936. Its totient is φ = 3948288.

The previous prime is 5815981. The next prime is 5816009. The reversal of 5815985 is 5895185.

It is a cyclic number.

It is not a de Polignac number, because 5815985 - 2² = 5815981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5815981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2969 + ... + 4521.

It is an arithmetic number, because the mean of its divisors is an integer number (503496).

Almost surely, 2^5815985 is an apocalyptic number.

It is an amenable number.

5815985 is a deficient number, since it is larger than the sum of its proper divisors (2239951).

5815985 is a wasteful number, since it uses less digits than its factorization.

5815985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1672.

The product of its digits is 72000, while the sum is 41.

The square root of 5815985 is about 2411.6353372763. The cubic root of 5815985 is about 179.8350855785.

The spelling of 5815985 in words is "five million, eight hundred fifteen thousand, nine hundred eighty-five".