66706607626 has 16 divisors (see below), whose sum is σ = 100546336800. Its totient is φ = 33191445168.

The previous prime is 66706607609. The next prime is 66706607641. The reversal of 66706607626 is 62670660766.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 404845 + ... + 545263.

It is an arithmetic number, because the mean of its divisors is an integer number (6284146050).

Almost surely, 2^66706607626 is an apocalyptic number.

66706607626 is a deficient number, since it is larger than the sum of its proper divisors (33839729174).

66706607626 is a wasteful number, since it uses less digits than its factorization.

66706607626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141573.

The product of its (nonzero) digits is 4572288, while the sum is 52.

The spelling of 66706607626 in words is "sixty-six billion, seven hundred six million, six hundred seven thousand, six hundred twenty-six".