656828 has 12 divisors (see below), whose sum is σ = 1186752. Its totient is φ = 317760.

The previous prime is 656819. The next prime is 656833. The reversal of 656828 is 828656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2525 + ... + 2772.

It is an arithmetic number, because the mean of its divisors is an integer number (98896).

2⁶⁵⁶⁸²⁸ is an apocalyptic number.

It is an amenable number.

656828 is a deficient number, since it is larger than the sum of its proper divisors (529924).

656828 is a wasteful number, since it uses less digits than its factorization.

656828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5332 (or 5330 counting only the distinct ones).

The product of its digits is 23040, while the sum is 35.

The square root of 656828 is about 810.4492581279. The cubic root of 656828 is about 86.9261715676.

The spelling of 656828 in words is "six hundred fifty-six thousand, eight hundred twenty-eight".