5664985 has 4 divisors (see below), whose sum is σ = 6797988. Its totient is φ = 4531984.

The previous prime is 5664979. The next prime is 5664991. The reversal of 5664985 is 5894665.

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

It is an interprime number because it is at equal distance from previous prime (5664979) and next prime (5664991).

It can be written as a sum of positive squares in 2 ways, for example, as 2468041 + 3196944 = 1571^2 + 1788^2 .

It is a cyclic number.

It is not a de Polignac number, because 5664985 - 2³ = 5664977 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 566494 + ... + 566503.

It is an arithmetic number, because the mean of its divisors is an integer number (1699497).

Almost surely, 2^5664985 is an apocalyptic number.

It is an amenable number.

5664985 is a deficient number, since it is larger than the sum of its proper divisors (1133003).

5664985 is a wasteful number, since it uses less digits than its factorization.

5664985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133002.

The product of its digits is 259200, while the sum is 43.

The square root of 5664985 is about 2380.1228959867. The cubic root of 5664985 is about 178.2650702913.

The spelling of 5664985 in words is "five million, six hundred sixty-four thousand, nine hundred eighty-five".