50665666 has 16 divisors (see below), whose sum is σ = 80213760. Its totient is φ = 23934960.

The previous prime is 50665649. The next prime is 50665669. The reversal of 50665666 is 66656605.

It is a happy number.

It is a super-2 number, since 2×50665666² = 5134019422447112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (50665669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14415 + ... + 17581.

It is an arithmetic number, because the mean of its divisors is an integer number (5013360).

Almost surely, 2^50665666 is an apocalyptic number.

50665666 is a deficient number, since it is larger than the sum of its proper divisors (29548094).

50665666 is a wasteful number, since it uses less digits than its factorization.

50665666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3609.

The product of its (nonzero) digits is 194400, while the sum is 40.

The square root of 50665666 is about 7117.9818769087. The cubic root of 50665666 is about 370.0308374590.

The spelling of 50665666 in words is "fifty million, six hundred sixty-five thousand, six hundred sixty-six".