6424436666 has 8 divisors (see below), whose sum is σ = 9637160544. Its totient is φ = 3212049820.

The previous prime is 6424436597. The next prime is 6424436687. The reversal of 6424436666 is 6666344246.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6424436666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29480 + ... + 117123.

It is an arithmetic number, because the mean of its divisors is an integer number (1204645068).

Almost surely, 2^6424436666 is an apocalyptic number.

6424436666 is a deficient number, since it is larger than the sum of its proper divisors (3212723878).

6424436666 is a wasteful number, since it uses less digits than its factorization.

6424436666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168516.

The product of its digits is 2985984, while the sum is 47.

The square root of 6424436666 is about 80152.5836514332. The cubic root of 6424436666 is about 1858.9955522089.

The spelling of 6424436666 in words is "six billion, four hundred twenty-four million, four hundred thirty-six thousand, six hundred sixty-six".