6656822 has 4 divisors (see below), whose sum is σ = 9985236. Its totient is φ = 3328410.

The previous prime is 6656807. The next prime is 6656833. The reversal of 6656822 is 2286566.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2286566 = 2 ⋅1143283.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1664204 + ... + 1664207.

It is an arithmetic number, because the mean of its divisors is an integer number (2496309).

Almost surely, 2^6656822 is an apocalyptic number.

6656822 is a deficient number, since it is larger than the sum of its proper divisors (3328414).

6656822 is a wasteful number, since it uses less digits than its factorization.

6656822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3328413.

The product of its digits is 34560, while the sum is 35.

The square root of 6656822 is about 2580.0817816496. The cubic root of 6656822 is about 188.1145182771.

The spelling of 6656822 in words is "six million, six hundred fifty-six thousand, eight hundred twenty-two".