656456233 has 2 divisors, whose sum is σ = 656456234. Its totient is φ = 656456232.

The previous prime is 656456231. The next prime is 656456239. The reversal of 656456233 is 332654656.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 430645504 + 225810729 = 20752^2 + 15027^2 .

It is a cyclic number.

It is not a de Polignac number, because 656456233 - 2¹ = 656456231 is a prime.

Together with 656456231, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (656456231) 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 as a sum of consecutive naturals, namely, 328228116 + 328228117.

It is an arithmetic number, because the mean of its divisors is an integer number (328228117).

Almost surely, 2^656456233 is an apocalyptic number.

It is an amenable number.

656456233 is a deficient number, since it is larger than the sum of its proper divisors (1).

656456233 is an equidigital number, since it uses as much as digits as its factorization.

656456233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 388800, while the sum is 40.

The square root of 656456233 is about 25621.4018546995. The cubic root of 656456233 is about 869.0976829767.

The spelling of 656456233 in words is "six hundred fifty-six million, four hundred fifty-six thousand, two hundred thirty-three".