6664042366 has 8 divisors (see below), whose sum is σ = 10017469800. Its totient is φ = 3324885768.

The previous prime is 6664042339. The next prime is 6664042369. The reversal of 6664042366 is 6632404666.

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 (6664042369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3566541 + ... + 3568408.

It is an arithmetic number, because the mean of its divisors is an integer number (1252183725).

Almost surely, 2^6664042366 is an apocalyptic number.

6664042366 is a deficient number, since it is larger than the sum of its proper divisors (3353427434).

6664042366 is a wasteful number, since it uses less digits than its factorization.

6664042366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7135418.

The product of its (nonzero) digits is 746496, while the sum is 43.

The square root of 6664042366 is about 81633.5860170310. The cubic root of 6664042366 is about 1881.8250692028.

The spelling of 6664042366 in words is "six billion, six hundred sixty-four million, forty-two thousand, three hundred sixty-six".