6646422 has 24 divisors (see below), whose sum is σ = 14124456. Its totient is φ = 2084608.

The previous prime is 6646417. The next prime is 6646427. The reversal of 6646422 is 2246466.

It is an interprime number because it is at equal distance from previous prime (6646417) and next prime (6646427).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a d-powerful number, because it can be written as 6 + 6⁴ + 4⁸ + 6⁷ + 4¹¹ + 2¹³ + 2²¹ .

It is a self number, because there is not a number n which added to its sum of digits gives 6646422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6646427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 183 + ... + 3650.

It is an arithmetic number, because the mean of its divisors is an integer number (588519).

Almost surely, 2^6646422 is an apocalyptic number.

6646422 is an abundant number, since it is smaller than the sum of its proper divisors (7478034).

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

6646422 is a wasteful number, since it uses less digits than its factorization.

6646422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3872 (or 3855 counting only the distinct ones).

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

The square root of 6646422 is about 2578.0655538601. The cubic root of 6646422 is about 188.0165030028.

The spelling of 6646422 in words is "six million, six hundred forty-six thousand, four hundred twenty-two".