6688022 has 16 divisors (see below), whose sum is σ = 11048400. Its totient is φ = 3011040.

The previous prime is 6688013. The next prime is 6688027. The reversal of 6688022 is 2208866.

It is a happy number.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 6688022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6688027) 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, 1004 + ... + 3792.

It is an arithmetic number, because the mean of its divisors is an integer number (690525).

Almost surely, 2^6688022 is an apocalyptic number.

6688022 is a deficient number, since it is larger than the sum of its proper divisors (4360378).

6688022 is a wasteful number, since it uses less digits than its factorization.

6688022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2911.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 6688022 is about 2586.1210335172. The cubic root of 6688022 is about 188.4079529582.

It can be divided in two parts, 66 and 88022, that added together give a palindrome (88088).

The spelling of 6688022 in words is "six million, six hundred eighty-eight thousand, twenty-two".