6688922 has 16 divisors (see below), whose sum is σ = 10723752. Its totient is φ = 3118080.

The previous prime is 6688919. The next prime is 6688933. The reversal of 6688922 is 2298866.

It can be written as a sum of positive squares in 4 ways, for example, as 2283121 + 4405801 = 1511^2 + 2099^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6688922.

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, 2972 + ... + 4712.

Almost surely, 2^6688922 is an apocalyptic number.

6688922 is a deficient number, since it is larger than the sum of its proper divisors (4034830).

6688922 is a wasteful number, since it uses less digits than its factorization.

6688922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1873.

The product of its digits is 82944, while the sum is 41.

The square root of 6688922 is about 2586.2950334407. The cubic root of 6688922 is about 188.4164038650.

It can be divided in two parts, 66 and 88922, that added together give a palindrome (88988).

The spelling of 6688922 in words is "six million, six hundred eighty-eight thousand, nine hundred twenty-two".