66275056 has 20 divisors (see below), whose sum is σ = 129734752. Its totient is φ = 32795136.

The previous prime is 66275047. The next prime is 66275057. The reversal of 66275056 is 65057266.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66275057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19800 + ... + 22903.

Almost surely, 2^66275056 is an apocalyptic number.

It is an amenable number.

66275056 is a deficient number, since it is larger than the sum of its proper divisors (63459696).

66275056 is a wasteful number, since it uses less digits than its factorization.

66275056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42808 (or 42802 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 66275056 is about 8140.9493303914. The cubic root of 66275056 is about 404.6846216190.

The spelling of 66275056 in words is "sixty-six million, two hundred seventy-five thousand, fifty-six".