66670903847 has 8 divisors (see below), whose sum is σ = 66800625600. Its totient is φ = 66541227264.

The previous prime is 66670903801. The next prime is 66670903853. The reversal of 66670903847 is 74830907666.

It is a happy number.

66670903847 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 66670903847 - 2¹⁸ = 66670641703 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66670903792 and 66670903801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66670903147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5118479 + ... + 5131487.

It is an arithmetic number, because the mean of its divisors is an integer number (8350078200).

Almost surely, 2^66670903847 is an apocalyptic number.

66670903847 is a deficient number, since it is larger than the sum of its proper divisors (129721753).

66670903847 is a wasteful number, since it uses less digits than its factorization.

66670903847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22585.

The product of its (nonzero) digits is 9144576, while the sum is 56.

The spelling of 66670903847 in words is "sixty-six billion, six hundred seventy million, nine hundred three thousand, eight hundred forty-seven".