500006666 has 16 divisors (see below), whose sum is σ = 768455424. Its totient is φ = 243870144.

The previous prime is 500006629. The next prime is 500006677. The reversal of 500006666 is 666600005.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70850 + ... + 77586.

It is an arithmetic number, because the mean of its divisors is an integer number (48028464).

Almost surely, 2^500006666 is an apocalyptic number.

500006666 is a deficient number, since it is larger than the sum of its proper divisors (268448758).

500006666 is a wasteful number, since it uses less digits than its factorization.

500006666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7645.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 500006666 is about 22360.8288307925. The cubic root of 500006666 is about 793.7040531736.

The spelling of 500006666 in words is "five hundred million, six thousand, six hundred sixty-six".