666666666606 has 8 divisors (see below), whose sum is σ = 1333333333224. Its totient is φ = 222222222200.

The previous prime is 666666666599. The next prime is 666666666613. The reversal of 666666666606 is 606666666666.

666666666606 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (666666666599) and next prime (666666666613).

It is a sphenic number, since it is the product of 3 distinct primes.

666666666606 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55555555545 + ... + 55555555556.

It is an arithmetic number, because the mean of its divisors is an integer number (166666666653).

Almost surely, 2^666666666606 is an apocalyptic number.

666666666606 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

666666666606 is a wasteful number, since it uses less digits than its factorization.

666666666606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111111111106.

The product of its (nonzero) digits is 362797056, while the sum is 66.

It can be divided in two parts, 66666666660 and 6, that added together give a palindrome (66666666666).

The spelling of 666666666606 in words is "six hundred sixty-six billion, six hundred sixty-six million, six hundred sixty-six thousand, six hundred six".