606666667 has 4 divisors (see below), whose sum is σ = 607604976. Its totient is φ = 605728360.

The previous prime is 606666629. The next prime is 606666677. The reversal of 606666667 is 766666606.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 606666667 - 2²⁷ = 472448939 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 606666667.

It is not an unprimeable number, because it can be changed into a prime (606666677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 468184 + ... + 469477.

It is an arithmetic number, because the mean of its divisors is an integer number (151901244).

Almost surely, 2^606666667 is an apocalyptic number.

606666667 is a deficient number, since it is larger than the sum of its proper divisors (938309).

606666667 is an equidigital number, since it uses as much as digits as its factorization.

606666667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938308.

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

The square root of 606666667 is about 24630.6042759815. The cubic root of 606666667 is about 846.5449913153.

The spelling of 606666667 in words is "six hundred six million, six hundred sixty-six thousand, six hundred sixty-seven".