6428668 has 12 divisors (see below), whose sum is σ = 11435032. Its totient is φ = 3161520.

The previous prime is 6428651. The next prime is 6428671. The reversal of 6428668 is 8668246.

It is a self number, because there is not a number n which added to its sum of digits gives 6428668.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12930 + ... + 13417.

Almost surely, 2^6428668 is an apocalyptic number.

It is an amenable number.

6428668 is a deficient number, since it is larger than the sum of its proper divisors (5006364).

6428668 is a wasteful number, since it uses less digits than its factorization.

6428668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26412 (or 26410 counting only the distinct ones).

The product of its digits is 110592, while the sum is 40.

The square root of 6428668 is about 2535.4818082566. The cubic root of 6428668 is about 185.9403593421.

The spelling of 6428668 in words is "six million, four hundred twenty-eight thousand, six hundred sixty-eight".