5665018 has 4 divisors (see below), whose sum is σ = 8497530. Its totient is φ = 2832508.

The previous prime is 5665013. The next prime is 5665027. The reversal of 5665018 is 8105665.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8105665 = 5 ⋅1621133.

It can be written as a sum of positive squares in only one way, i.e., 5212089 + 452929 = 2283^2 + 673^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (5665013) 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 as a sum of consecutive naturals, namely, 1416253 + ... + 1416256.

Almost surely, 2^5665018 is an apocalyptic number.

5665018 is a deficient number, since it is larger than the sum of its proper divisors (2832512).

5665018 is a wasteful number, since it uses less digits than its factorization.

5665018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2832511.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 5665018 is about 2380.1298283917. The cubic root of 5665018 is about 178.2654164373.

The spelling of 5665018 in words is "five million, six hundred sixty-five thousand, eighteen".