66600060673 has 4 divisors (see below), whose sum is σ = 66673168128. Its totient is φ = 66526953220.

The previous prime is 66600060619. The next prime is 66600060691. The reversal of 66600060673 is 37606000666.

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 a cyclic number.

It is not a de Polignac number, because 66600060673 - 2²⁹ = 66063189761 is a prime.

It is a Smith number, since the sum of its digits (40) 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 not an unprimeable number, because it can be changed into a prime (66600060613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36552361 + ... + 36554182.

It is an arithmetic number, because the mean of its divisors is an integer number (16668292032).

Almost surely, 2^66600060673 is an apocalyptic number.

It is an amenable number.

66600060673 is a deficient number, since it is larger than the sum of its proper divisors (73107455).

66600060673 is an equidigital number, since it uses as much as digits as its factorization.

66600060673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73107454.

The product of its (nonzero) digits is 163296, while the sum is 40.

The spelling of 66600060673 in words is "sixty-six billion, six hundred million, sixty thousand, six hundred seventy-three".