606666 has 8 divisors (see below), whose sum is σ = 1213344. Its totient is φ = 202220.

The previous prime is 606659. The next prime is 606673. The reversal of 606666 is 666606.

It is an interprime number because it is at equal distance from previous prime (606659) and next prime (606673).

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

606666 is an admirable number.

606666 is a modest number, since divided by 666 gives 606 as remainder.

It is an unprimeable number.

606666 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50550 + ... + 50561.

It is an arithmetic number, because the mean of its divisors is an integer number (151668).

2⁶⁰⁶⁶⁶⁶ is an apocalyptic number.

606666 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.

606666 is a wasteful number, since it uses less digits than its factorization.

606666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101116.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 606666 is about 778.8876684093. The cubic root of 606666 is about 84.6544681070.

The spelling of 606666 in words is "six hundred six thousand, six hundred sixty-six".