8406668 has 6 divisors (see below), whose sum is σ = 14711676. Its totient is φ = 4203332.

The previous prime is 8406667. The next prime is 8406689. The reversal of 8406668 is 8666048.

It is not an unprimeable number, because it can be changed into a prime (8406667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050830 + ... + 1050837.

It is an arithmetic number, because the mean of its divisors is an integer number (2451946).

Almost surely, 2^8406668 is an apocalyptic number.

It is an amenable number.

8406668 is a deficient number, since it is larger than the sum of its proper divisors (6305008).

8406668 is a wasteful number, since it uses less digits than its factorization.

8406668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2101671 (or 2101669 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 8406668 is about 2899.4254603283. The cubic root of 8406668 is about 203.3330454772. Note that the first 3 decimals are identical.

The spelling of 8406668 in words is "eight million, four hundred six thousand, six hundred sixty-eight".