6688466 has 8 divisors (see below), whose sum is σ = 10059660. Its totient is φ = 3335248.

The previous prime is 6688457. The next prime is 6688471. The reversal of 6688466 is 6648866.

It can be written as a sum of positive squares in 2 ways, for example, as 6682225 + 6241 = 2585^2 + 79^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3521 + ... + 5076.

Almost surely, 2^6688466 is an apocalyptic number.

6688466 is a deficient number, since it is larger than the sum of its proper divisors (3371194).

6688466 is a wasteful number, since it uses less digits than its factorization.

6688466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8988.

The product of its digits is 331776, while the sum is 44.

The square root of 6688466 is about 2586.2068749425. The cubic root of 6688466 is about 188.4121221669.

The spelling of 6688466 in words is "six million, six hundred eighty-eight thousand, four hundred sixty-six".