5617985 has 4 divisors (see below), whose sum is σ = 6741588. Its totient is φ = 4494384.

The previous prime is 5617981. The next prime is 5617987. The reversal of 5617985 is 5897165.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4293184 + 1324801 = 2072^2 + 1151^2 .

It is a cyclic number.

It is not a de Polignac number, because 5617985 - 2² = 5617981 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5617981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 561794 + ... + 561803.

It is an arithmetic number, because the mean of its divisors is an integer number (1685397).

Almost surely, 2^5617985 is an apocalyptic number.

It is an amenable number.

5617985 is a deficient number, since it is larger than the sum of its proper divisors (1123603).

5617985 is a wasteful number, since it uses less digits than its factorization.

5617985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123602.

The product of its digits is 75600, while the sum is 41.

The square root of 5617985 is about 2370.2288919005. The cubic root of 5617985 is about 177.7707037839.

The spelling of 5617985 in words is "five million, six hundred seventeen thousand, nine hundred eighty-five".