4220400666 has 16 divisors (see below), whose sum is σ = 8441460000. Its totient is φ = 1406690448.

The previous prime is 4220400659. The next prime is 4220400719. The reversal of 4220400666 is 6660040224.

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 in 7 ways as a sum of consecutive naturals, for example, 105085 + ... + 139583.

It is an arithmetic number, because the mean of its divisors is an integer number (527591250).

Almost surely, 2^4220400666 is an apocalyptic number.

4220400666 is an abundant number, since it is smaller than the sum of its proper divisors (4221059334).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4220400666 is a wasteful number, since it uses less digits than its factorization.

4220400666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54893.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 4220400666 is about 64964.6108739212. The cubic root of 4220400666 is about 1616.0367309091.

The spelling of 4220400666 in words is "four billion, two hundred twenty million, four hundred thousand, six hundred sixty-six".