6664822 has 4 divisors (see below), whose sum is σ = 9997236. Its totient is φ = 3332410.

The previous prime is 6664811. The next prime is 6664831. The reversal of 6664822 is 2284666.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2284666 = 2 ⋅1142333.

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 as a sum of consecutive naturals, namely, 1666204 + ... + 1666207.

It is an arithmetic number, because the mean of its divisors is an integer number (2499309).

Almost surely, 2^6664822 is an apocalyptic number.

6664822 is a deficient number, since it is larger than the sum of its proper divisors (3332414).

6664822 is a wasteful number, since it uses less digits than its factorization.

6664822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3332413.

The product of its digits is 27648, while the sum is 34.

The square root of 6664822 is about 2581.6316545937. The cubic root of 6664822 is about 188.1898451969.

The spelling of 6664822 in words is "six million, six hundred sixty-four thousand, eight hundred twenty-two".