606066417668721 has 4 divisors (see below), whose sum is σ = 808088556891632. Its totient is φ = 404044278445812.

The previous prime is 606066417668713. The next prime is 606066417668729. The reversal of 606066417668721 is 127866714660606.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (606066417668713) and next prime (606066417668729).

It is not a de Polignac number, because 606066417668721 - 2³ = 606066417668713 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (606066417668729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101011069611451 + ... + 101011069611456.

It is an arithmetic number, because the mean of its divisors is an integer number (202022139222908).

Almost surely, 2^{606066417668721} is an apocalyptic number.

It is an amenable number.

606066417668721 is a deficient number, since it is larger than the sum of its proper divisors (202022139222911).

606066417668721 is a wasteful number, since it uses less digits than its factorization.

606066417668721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202022139222910.

The product of its (nonzero) digits is 146313216, while the sum is 66.

The spelling of 606066417668721 in words is "six hundred six trillion, sixty-six billion, four hundred seventeen million, six hundred sixty-eight thousand, seven hundred twenty-one".