5665668 has 12 divisors (see below), whose sum is σ = 13219920. Its totient is φ = 1888552.

The previous prime is 5665661. The next prime is 5665687. The reversal of 5665668 is 8665665.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (5665661) 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, 236058 + ... + 236081.

It is an arithmetic number, because the mean of its divisors is an integer number (1101660).

Almost surely, 2^5665668 is an apocalyptic number.

It is an amenable number.

5665668 is an abundant number, since it is smaller than the sum of its proper divisors (7554252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5665668 is a wasteful number, since it uses less digits than its factorization.

5665668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472146 (or 472144 counting only the distinct ones).

The product of its digits is 259200, while the sum is 42.

The square root of 5665668 is about 2380.2663716483. The cubic root of 5665668 is about 178.2722341908.

The spelling of 5665668 in words is "five million, six hundred sixty-five thousand, six hundred sixty-eight".