5665666044 has 24 divisors (see below), whose sum is σ = 13251450240. Its totient is φ = 1884046384.

The previous prime is 5665666021. The next prime is 5665666049. The reversal of 5665666044 is 4406665665.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 5665665984 and 5665666002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5665666049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 558384 + ... + 568439.

It is an arithmetic number, because the mean of its divisors is an integer number (552143760).

Almost surely, 2^5665666044 is an apocalyptic number.

It is an amenable number.

5665666044 is an abundant number, since it is smaller than the sum of its proper divisors (7585784196).

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

5665666044 is a wasteful number, since it uses less digits than its factorization.

5665666044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1127249 (or 1127247 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 48.

The square root of 5665666044 is about 75270.6187300197. The cubic root of 5665666044 is about 1782.7221367543.

The spelling of 5665666044 in words is "five billion, six hundred sixty-five million, six hundred sixty-six thousand, forty-four".