666335606 has 4 divisors (see below), whose sum is σ = 999503412. Its totient is φ = 333167802.

The previous prime is 666335597. The next prime is 666335647. The reversal of 666335606 is 606533666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166583900 + ... + 166583903.

It is an arithmetic number, because the mean of its divisors is an integer number (249875853).

Almost surely, 2^666335606 is an apocalyptic number.

666335606 is a deficient number, since it is larger than the sum of its proper divisors (333167806).

666335606 is a wasteful number, since it uses less digits than its factorization.

666335606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333167805.

The product of its (nonzero) digits is 349920, while the sum is 41.

The square root of 666335606 is about 25813.4772163690. The cubic root of 666335606 is about 873.4358367278.

The spelling of 666335606 in words is "six hundred sixty-six million, three hundred thirty-five thousand, six hundred six".