6313144666 has 4 divisors (see below), whose sum is σ = 9469717002. Its totient is φ = 3156572332.

The previous prime is 6313144657. The next prime is 6313144693. The reversal of 6313144666 is 6664413136.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5787405625 + 525739041 = 76075^2 + 22929^2 .

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 an unprimeable number.

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 as a sum of consecutive naturals, namely, 1578286165 + ... + 1578286168.

Almost surely, 2^6313144666 is an apocalyptic number.

6313144666 is a deficient number, since it is larger than the sum of its proper divisors (3156572336).

6313144666 is a wasteful number, since it uses less digits than its factorization.

6313144666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3156572335.

The product of its digits is 186624, while the sum is 40.

The square root of 6313144666 is about 79455.2997980626. The cubic root of 6313144666 is about 1848.1983595868.

The spelling of 6313144666 in words is "six billion, three hundred thirteen million, one hundred forty-four thousand, six hundred sixty-six".