6663714380866 has 8 divisors (see below), whose sum is σ = 10132497209484. Its totient is φ = 3286215311040.

The previous prime is 6663714380821. The next prime is 6663714380887. The reversal of 6663714380866 is 6680834173666.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6570911897641 + 92802483225 = 2563379^2 + 304635^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 6663714380798 and 6663714380807.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22820939515 + ... + 22820939806.

Almost surely, 2^{6663714380866} is an apocalyptic number.

6663714380866 is a deficient number, since it is larger than the sum of its proper divisors (3468782828618).

6663714380866 is a wasteful number, since it uses less digits than its factorization.

6663714380866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45641879396.

The product of its (nonzero) digits is 125411328, while the sum is 64.

The spelling of 6663714380866 in words is "six trillion, six hundred sixty-three billion, seven hundred fourteen million, three hundred eighty thousand, eight hundred sixty-six".