6664422 has 16 divisors (see below), whose sum is σ = 13363200. Its totient is φ = 2215752.

The previous prime is 6664417. The next prime is 6664429. The reversal of 6664422 is 2244666.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 6664422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6664429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1579 + ... + 3977.

It is an arithmetic number, because the mean of its divisors is an integer number (835200).

Almost surely, 2^6664422 is an apocalyptic number.

6664422 is an abundant number, since it is smaller than the sum of its proper divisors (6698778).

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

6664422 is a wasteful number, since it uses less digits than its factorization.

6664422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2867.

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

The square root of 6664422 is about 2581.5541830456. The cubic root of 6664422 is about 188.1860802830.

It can be divided in two parts, 66644 and 22, that added together give a palindrome (66666).

The spelling of 6664422 in words is "six million, six hundred sixty-four thousand, four hundred twenty-two".