8420668 has 12 divisors (see below), whose sum is σ = 15377040. Its totient is φ = 4027232.

The previous prime is 8420653. The next prime is 8420669. The reversal of 8420668 is 8660248.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8420669) by changing a digit.

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, 45673 + ... + 45856.

It is an arithmetic number, because the mean of its divisors is an integer number (1281420).

Almost surely, 2^8420668 is an apocalyptic number.

It is an amenable number.

8420668 is a deficient number, since it is larger than the sum of its proper divisors (6956372).

8420668 is a wasteful number, since it uses less digits than its factorization.

8420668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91556 (or 91554 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 8420668 is about 2901.8387274278. The cubic root of 8420668 is about 203.4458560807.

The spelling of 8420668 in words is "eight million, four hundred twenty thousand, six hundred sixty-eight".