422420646 has 8 divisors (see below), whose sum is σ = 844841304. Its totient is φ = 140806880.

The previous prime is 422420639. The next prime is 422420657. The reversal of 422420646 is 646024224.

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

422420646 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35201715 + ... + 35201726.

It is an arithmetic number, because the mean of its divisors is an integer number (105605163).

Almost surely, 2^422420646 is an apocalyptic number.

422420646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

422420646 is a wasteful number, since it uses less digits than its factorization.

422420646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70403446.

The product of its (nonzero) digits is 18432, while the sum is 30.

The square root of 422420646 is about 20552.8743975143. The cubic root of 422420646 is about 750.3232064745.

The spelling of 422420646 in words is "four hundred twenty-two million, four hundred twenty thousand, six hundred forty-six".