656822 has 4 divisors (see below), whose sum is σ = 985236. Its totient is φ = 328410.

The previous prime is 656819. The next prime is 656833. The reversal of 656822 is 228656.

It is a semiprime because it is the product of two primes.

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, 164204 + ... + 164207.

It is an arithmetic number, because the mean of its divisors is an integer number (246309).

2⁶⁵⁶⁸²² is an apocalyptic number.

656822 is a deficient number, since it is larger than the sum of its proper divisors (328414).

656822 is a wasteful number, since it uses less digits than its factorization.

656822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328413.

The product of its digits is 5760, while the sum is 29.

The square root of 656822 is about 810.4455564688. The cubic root of 656822 is about 86.9259068821.

The spelling of 656822 in words is "six hundred fifty-six thousand, eight hundred twenty-two".