422220666 has 16 divisors (see below), whose sum is σ = 965075904. Its totient is φ = 120634464.

The previous prime is 422220647. The next prime is 422220671. The reversal of 422220666 is 666022224.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5026395 + ... + 5026478.

It is an arithmetic number, because the mean of its divisors is an integer number (60317244).

Almost surely, 2^422220666 is an apocalyptic number.

422220666 is an abundant number, since it is smaller than the sum of its proper divisors (542855238).

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

422220666 is a wasteful number, since it uses less digits than its factorization.

422220666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10052885.

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

The square root of 422220666 is about 20548.0088086413. The cubic root of 422220666 is about 750.2047831911.

The spelling of 422220666 in words is "four hundred twenty-two million, two hundred twenty thousand, six hundred sixty-six".