656571882 has 16 divisors (see below), whose sum is σ = 1348634592. Its totient is φ = 212942160.

The previous prime is 656571871. The next prime is 656571887. The reversal of 656571882 is 288175656.

It is not an unprimeable number, because it can be changed into a prime (656571887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1478544 + ... + 1478987.

It is an arithmetic number, because the mean of its divisors is an integer number (84289662).

Almost surely, 2^656571882 is an apocalyptic number.

656571882 is an abundant number, since it is smaller than the sum of its proper divisors (692062710).

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

656571882 is a wasteful number, since it uses less digits than its factorization.

656571882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2957573.

The product of its digits is 806400, while the sum is 48.

The square root of 656571882 is about 25623.6586380634. The cubic root of 656571882 is about 869.1487167807.

The spelling of 656571882 in words is "six hundred fifty-six million, five hundred seventy-one thousand, eight hundred eighty-two".