66850478606 has 8 divisors (see below), whose sum is σ = 100280924760. Its totient is φ = 33423503688.

The previous prime is 66850478603. The next prime is 66850478609. The reversal of 66850478606 is 60687405866.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (66850478603) and next prime (66850478609).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66850478603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 819116 + ... + 897023.

It is an arithmetic number, because the mean of its divisors is an integer number (12535115595).

Almost surely, 2^66850478606 is an apocalyptic number.

66850478606 is a deficient number, since it is larger than the sum of its proper divisors (33430446154).

66850478606 is a wasteful number, since it uses less digits than its factorization.

66850478606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1735618.

The product of its (nonzero) digits is 11612160, while the sum is 56.

The spelling of 66850478606 in words is "sixty-six billion, eight hundred fifty million, four hundred seventy-eight thousand, six hundred six".