666727603 has 8 divisors (see below), whose sum is σ = 696049200. Its totient is φ = 637828128.

The previous prime is 666727601. The next prime is 666727619. The reversal of 666727603 is 306727666.

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

It is a cyclic number.

It is not a de Polignac number, because 666727603 - 2¹ = 666727601 is a prime.

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 666727603.

It is not an unprimeable number, because it can be changed into a prime (666727601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102301 + ... + 108622.

It is an arithmetic number, because the mean of its divisors is an integer number (87006150).

Almost surely, 2^666727603 is an apocalyptic number.

666727603 is a deficient number, since it is larger than the sum of its proper divisors (29321597).

666727603 is a wasteful number, since it uses less digits than its factorization.

666727603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211061.

The product of its (nonzero) digits is 381024, while the sum is 43.

The square root of 666727603 is about 25821.0689747733. The cubic root of 666727603 is about 873.6070803206.

The spelling of 666727603 in words is "six hundred sixty-six million, seven hundred twenty-seven thousand, six hundred three".