6640224220466 has 8 divisors (see below), whose sum is σ = 9961960935024. Its totient is φ = 3319570575460.

The previous prime is 6640224220463. The next prime is 6640224220477.

It is a happy number.

6640224220466 is nontrivially palindromic in base 10.

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

It is not an unprimeable number, because it can be changed into a prime (6640224220463) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 270752060 + ... + 270776583.

It is an arithmetic number, because the mean of its divisors is an integer number (1245245116878).

Almost surely, 2^{6640224220466} is an apocalyptic number.

6640224220466 is a deficient number, since it is larger than the sum of its proper divisors (3321736714558).

6640224220466 is a wasteful number, since it uses less digits than its factorization.

6640224220466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541534776.

The product of its (nonzero) digits is 1327104, while the sum is 44.

The spelling of 6640224220466 in words is "six trillion, six hundred forty billion, two hundred twenty-four million, two hundred twenty thousand, four hundred sixty-six".