656166056 has 48 divisors (see below), whose sum is σ = 1541281140. Its totient is φ = 259580160.

The previous prime is 656166053. The next prime is 656166059. The reversal of 656166056 is 650661656.

It is an interprime number because it is at equal distance from previous prime (656166053) and next prime (656166059).

It can be written as a sum of positive squares in 2 ways, for example, as 652802500 + 3363556 = 25550^2 + 1834^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656166053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59285 + ... + 69476.

Almost surely, 2^656166056 is an apocalyptic number.

It is an amenable number.

656166056 is an abundant number, since it is smaller than the sum of its proper divisors (885115084).

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

656166056 is a wasteful number, since it uses less digits than its factorization.

656166056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128794 (or 128783 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 41.

The square root of 656166056 is about 25615.7384433867. The cubic root of 656166056 is about 868.9696067425.

The spelling of 656166056 in words is "six hundred fifty-six million, one hundred sixty-six thousand, fifty-six".