656806227 has 16 divisors (see below), whose sum is σ = 1091834112. Its totient is φ = 341197920.

The previous prime is 656806223. The next prime is 656806243. The reversal of 656806227 is 722608656.

It is not a de Polignac number, because 656806227 - 2² = 656806223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (656806223) 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 15 ways as a sum of consecutive naturals, for example, 1421428 + ... + 1421889.

It is an arithmetic number, because the mean of its divisors is an integer number (68239632).

Almost surely, 2^656806227 is an apocalyptic number.

656806227 is a deficient number, since it is larger than the sum of its proper divisors (435027885).

656806227 is a wasteful number, since it uses less digits than its factorization.

656806227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2843338.

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 656806227 is about 25628.2310548348. The cubic root of 656806227 is about 869.2521106023.

The spelling of 656806227 in words is "six hundred fifty-six million, eight hundred six thousand, two hundred twenty-seven".