6668822 has 4 divisors (see below), whose sum is σ = 10003236. Its totient is φ = 3334410.

The previous prime is 6668821. The next prime is 6668833. The reversal of 6668822 is 2288666.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2288666 = 2 ⋅1144333.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6668821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1667204 + ... + 1667207.

It is an arithmetic number, because the mean of its divisors is an integer number (2500809).

Almost surely, 2^6668822 is an apocalyptic number.

6668822 is a deficient number, since it is larger than the sum of its proper divisors (3334414).

6668822 is a wasteful number, since it uses less digits than its factorization.

6668822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3334413.

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

The square root of 6668822 is about 2582.4062422477. The cubic root of 6668822 is about 188.2274860540.

The spelling of 6668822 in words is "six million, six hundred sixty-eight thousand, eight hundred twenty-two".