666555010 has 32 divisors (see below), whose sum is σ = 1310686272. Its totient is φ = 242047680.

The previous prime is 666555007. The next prime is 666555011. The reversal of 666555010 is 10555666.

666555010 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×666555010² = 888591162712200200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (666555011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83869 + ... + 91471.

It is an arithmetic number, because the mean of its divisors is an integer number (40958946).

Almost surely, 2^666555010 is an apocalyptic number.

666555010 is a deficient number, since it is larger than the sum of its proper divisors (644131262).

666555010 is a wasteful number, since it uses less digits than its factorization.

666555010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8418.

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 666555010 is about 25817.7266621211. The cubic root of 666555010 is about 873.5316914719.

The spelling of 666555010 in words is "six hundred sixty-six million, five hundred fifty-five thousand, ten".