56665005 has 8 divisors (see below), whose sum is σ = 90664032. Its totient is φ = 30221328.

The previous prime is 56664997. The next prime is 56665027. The reversal of 56665005 is 50056665.

56665005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 56665005 - 2³ = 56664997 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 1888819 + ... + 1888848.

It is an arithmetic number, because the mean of its divisors is an integer number (11333004).

Almost surely, 2^56665005 is an apocalyptic number.

It is an amenable number.

56665005 is a deficient number, since it is larger than the sum of its proper divisors (33999027).

56665005 is a wasteful number, since it uses less digits than its factorization.

56665005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3777675.

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 56665005 is about 7527.6161565266. The cubic root of 56665005 is about 384.0946964263.

The spelling of 56665005 in words is "fifty-six million, six hundred sixty-five thousand, five".