8212666 has 32 divisors (see below), whose sum is σ = 16267392. Its totient is φ = 3010560.

The previous prime is 8212661. The next prime is 8212667. The reversal of 8212666 is 6662128.

It is not an unprimeable number, because it can be changed into a prime (8212661) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1050 + ... + 4186.

It is an arithmetic number, because the mean of its divisors is an integer number (508356).

Almost surely, 2^8212666 is an apocalyptic number.

8212666 is a deficient number, since it is larger than the sum of its proper divisors (8054726).

8212666 is a wasteful number, since it uses less digits than its factorization.

8212666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3174.

The product of its digits is 6912, while the sum is 31.

The square root of 8212666 is about 2865.7749388254. The cubic root of 8212666 is about 201.7567407960.

The spelling of 8212666 in words is "eight million, two hundred twelve thousand, six hundred sixty-six".