8421066 has 24 divisors (see below), whose sum is σ = 19206720. Its totient is φ = 2659176.

The previous prime is 8421041. The next prime is 8421067. The reversal of 8421066 is 6601248.

It is a super-3 number, since 3×8421066³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (8421067) 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 11 ways as a sum of consecutive naturals, for example, 11970 + ... + 12653.

It is an arithmetic number, because the mean of its divisors is an integer number (800280).

Almost surely, 2^8421066 is an apocalyptic number.

8421066 is an abundant number, since it is smaller than the sum of its proper divisors (10785654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8421066 is a wasteful number, since it uses less digits than its factorization.

8421066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24650 (or 24647 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 8421066 is about 2901.9073038262. The cubic root of 8421066 is about 203.4490612966.

The spelling of 8421066 in words is "eight million, four hundred twenty-one thousand, sixty-six".