656922 has 16 divisors (see below), whose sum is σ = 1501632. Its totient is φ = 187680.

The previous prime is 656917. The next prime is 656923. The reversal of 656922 is 229656.

It is a self number, because there is not a number n which added to its sum of digits gives 656922.

It is not an unprimeable number, because it can be changed into a prime (656923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7779 + ... + 7862.

It is an arithmetic number, because the mean of its divisors is an integer number (93852).

2⁶⁵⁶⁹²² is an apocalyptic number.

656922 is an abundant number, since it is smaller than the sum of its proper divisors (844710).

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

656922 is a wasteful number, since it uses less digits than its factorization.

656922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15653.

The product of its digits is 6480, while the sum is 30.

The square root of 656922 is about 810.5072485796. The cubic root of 656922 is about 86.9303180973.

The spelling of 656922 in words is "six hundred fifty-six thousand, nine hundred twenty-two".