776316197 has 2 divisors, whose sum is σ = 776316198. Its totient is φ = 776316196.

The previous prime is 776316179. The next prime is 776316209. The reversal of 776316197 is 791613677.

Together with previous prime (776316179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 742780516 + 33535681 = 27254^2 + 5791^2 .

It is a cyclic number.

It is not a de Polignac number, because 776316197 - 2⁶ = 776316133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (776316097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 388158098 + 388158099.

It is an arithmetic number, because the mean of its divisors is an integer number (388158099).

Almost surely, 2^776316197 is an apocalyptic number.

It is an amenable number.

776316197 is a deficient number, since it is larger than the sum of its proper divisors (1).

776316197 is an equidigital number, since it uses as much as digits as its factorization.

776316197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 333396, while the sum is 47.

The square root of 776316197 is about 27862.4513817431. The cubic root of 776316197 is about 919.0649751213.

The spelling of 776316197 in words is "seven hundred seventy-six million, three hundred sixteen thousand, one hundred ninety-seven".