6313787666 has 16 divisors (see below), whose sum is σ = 10105706400. Its totient is φ = 2949771168.

The previous prime is 6313787663. The next prime is 6313787699. The reversal of 6313787666 is 6667873136.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (6313787663) by changing a digit.

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, 1135256 + ... + 1140803.

It is an arithmetic number, because the mean of its divisors is an integer number (631606650).

Almost surely, 2^6313787666 is an apocalyptic number.

6313787666 is a deficient number, since it is larger than the sum of its proper divisors (3791918734).

6313787666 is a wasteful number, since it uses less digits than its factorization.

6313787666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2276153.

The product of its digits is 4572288, while the sum is 53.

The square root of 6313787666 is about 79459.3459952950. The cubic root of 6313787666 is about 1848.2611043975.

The spelling of 6313787666 in words is "six billion, three hundred thirteen million, seven hundred eighty-seven thousand, six hundred sixty-six".