6670066666 has 16 divisors (see below), whose sum is σ = 10099904256. Its totient is φ = 3303537376.

The previous prime is 6670066619. The next prime is 6670066681. The reversal of 6670066666 is 6666600766.

It is a happy number.

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, 101895 + ... + 154021.

It is an arithmetic number, because the mean of its divisors is an integer number (631244016).

Almost surely, 2^6670066666 is an apocalyptic number.

6670066666 is a deficient number, since it is larger than the sum of its proper divisors (3429837590).

6670066666 is a wasteful number, since it uses less digits than its factorization.

6670066666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52733.

The product of its (nonzero) digits is 1959552, while the sum is 49.

The square root of 6670066666 is about 81670.4760975470. The cubic root of 6670066666 is about 1882.3919555727.

The spelling of 6670066666 in words is "six billion, six hundred seventy million, sixty-six thousand, six hundred sixty-six".