656066249 has 2 divisors, whose sum is σ = 656066250. Its totient is φ = 656066248.

The previous prime is 656066207. The next prime is 656066263. The reversal of 656066249 is 942660656.

656066249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 471975625 + 184090624 = 21725^2 + 13568^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-656066249 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (656066269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328033124 + 328033125.

It is an arithmetic number, because the mean of its divisors is an integer number (328033125).

Almost surely, 2^656066249 is an apocalyptic number.

It is an amenable number.

656066249 is a deficient number, since it is larger than the sum of its proper divisors (1).

656066249 is an equidigital number, since it uses as much as digits as its factorization.

656066249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 44.

The square root of 656066249 is about 25613.7902115247. The cubic root of 656066249 is about 868.9255459206.

The spelling of 656066249 in words is "six hundred fifty-six million, sixty-six thousand, two hundred forty-nine".