797766197 has 2 divisors, whose sum is σ = 797766198. Its totient is φ = 797766196.

The previous prime is 797766127. The next prime is 797766223. The reversal of 797766197 is 791667797.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 639786436 + 157979761 = 25294^2 + 12569^2 .

It is a cyclic number.

It is not a de Polignac number, because 797766197 - 2²⁴ = 780988981 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (797766107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 398883098 + 398883099.

It is an arithmetic number, because the mean of its divisors is an integer number (398883099).

Almost surely, 2^797766197 is an apocalyptic number.

It is an amenable number.

797766197 is a deficient number, since it is larger than the sum of its proper divisors (1).

797766197 is an equidigital number, since it uses as much as digits as its factorization.

797766197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7001316, while the sum is 59.

The square root of 797766197 is about 28244.7552122514. The cubic root of 797766197 is about 927.4529283512.

The spelling of 797766197 in words is "seven hundred ninety-seven million, seven hundred sixty-six thousand, one hundred ninety-seven".