5616665 has 8 divisors (see below), whose sum is σ = 6800328. Its totient is φ = 4453120.

The previous prime is 5616659. The next prime is 5616671. The reversal of 5616665 is 5666165.

It is an interprime number because it is at equal distance from previous prime (5616659) and next prime (5616671).

It can be written as a sum of positive squares in 4 ways, for example, as 811801 + 4804864 = 901^2 + 2192^2 .

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

It is not a de Polignac number, because 5616665 - 2⁶ = 5616601 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4406 + ... + 5535.

It is an arithmetic number, because the mean of its divisors is an integer number (850041).

Almost surely, 2^5616665 is an apocalyptic number.

It is an amenable number.

5616665 is a deficient number, since it is larger than the sum of its proper divisors (1183663).

5616665 is a wasteful number, since it uses less digits than its factorization.

5616665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10059.

The product of its digits is 32400, while the sum is 35.

The square root of 5616665 is about 2369.9504214224. The cubic root of 5616665 is about 177.7567797103.

The spelling of 5616665 in words is "five million, six hundred sixteen thousand, six hundred sixty-five".