656771741 has 2 divisors, whose sum is σ = 656771742. Its totient is φ = 656771740.

The previous prime is 656771701. The next prime is 656771747. The reversal of 656771741 is 147177656.

It is a happy number.

656771741 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., 359898841 + 296872900 = 18971^2 + 17230^2 .

It is a cyclic number.

It is not a de Polignac number, because 656771741 - 2¹⁸ = 656509597 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 656771692 and 656771701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (656771747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328385870 + 328385871.

It is an arithmetic number, because the mean of its divisors is an integer number (328385871).

Almost surely, 2^656771741 is an apocalyptic number.

It is an amenable number.

656771741 is a deficient number, since it is larger than the sum of its proper divisors (1).

656771741 is an equidigital number, since it uses as much as digits as its factorization.

656771741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 246960, while the sum is 44.

The square root of 656771741 is about 25627.5582332769. The cubic root of 656771741 is about 869.2368968037.

The spelling of 656771741 in words is "six hundred fifty-six million, seven hundred seventy-one thousand, seven hundred forty-one".