656996 has 6 divisors (see below), whose sum is σ = 1149750. Its totient is φ = 328496.

The previous prime is 656993. The next prime is 657017. The reversal of 656996 is 699656.

It can be written as a sum of positive squares in only one way, i.e., 343396 + 313600 = 586^2 + 560^2 .

It is not an unprimeable number, because it can be changed into a prime (656993) 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 as a sum of consecutive naturals, namely, 82121 + ... + 82128.

It is an arithmetic number, because the mean of its divisors is an integer number (191625).

2⁶⁵⁶⁹⁹⁶ is an apocalyptic number.

It is an amenable number.

656996 is a deficient number, since it is larger than the sum of its proper divisors (492754).

656996 is a wasteful number, since it uses less digits than its factorization.

656996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164253 (or 164251 counting only the distinct ones).

The product of its digits is 87480, while the sum is 41.

The square root of 656996 is about 810.5528977186. The cubic root of 656996 is about 86.9335821083.

The spelling of 656996 in words is "six hundred fifty-six thousand, nine hundred ninety-six".