796666657 has 2 divisors, whose sum is σ = 796666658. Its totient is φ = 796666656.

The previous prime is 796666643. The next prime is 796666667. The reversal of 796666657 is 756666697.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 777796321 + 18870336 = 27889^2 + 4344^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-796666657 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (796666667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 398333328 + 398333329.

It is an arithmetic number, because the mean of its divisors is an integer number (398333329).

Almost surely, 2^796666657 is an apocalyptic number.

It is an amenable number.

796666657 is a deficient number, since it is larger than the sum of its proper divisors (1).

796666657 is an equidigital number, since it uses as much as digits as its factorization.

796666657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17146080, while the sum is 58.

The square root of 796666657 is about 28225.2840021141. The cubic root of 796666657 is about 927.0266378483.

The spelling of 796666657 in words is "seven hundred ninety-six million, six hundred sixty-six thousand, six hundred fifty-seven".