6666822 has 24 divisors (see below), whose sum is σ = 15295176. Its totient is φ = 2091456.

The previous prime is 6666797. The next prime is 6666833. The reversal of 6666822 is 2286666.

6666822 = 279² + 280² + ... + 346².

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10588 + ... + 11199.

It is an arithmetic number, because the mean of its divisors is an integer number (637299).

Almost surely, 2^6666822 is an apocalyptic number.

6666822 is an abundant number, since it is smaller than the sum of its proper divisors (8628354).

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

6666822 is a wasteful number, since it uses less digits than its factorization.

6666822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21812 (or 21809 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 6666822 is about 2582.0189774671. The cubic root of 6666822 is about 188.2086675075.

The spelling of 6666822 in words is "six million, six hundred sixty-six thousand, eight hundred twenty-two".