776012161 has 2 divisors, whose sum is σ = 776012162. Its totient is φ = 776012160.

The previous prime is 776012123. The next prime is 776012173. The reversal of 776012161 is 161210677.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 673091136 + 102921025 = 25944^2 + 10145^2 .

It is a cyclic number.

It is not a de Polignac number, because 776012161 - 2⁷ = 776012033 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (776012101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 388006080 + 388006081.

It is an arithmetic number, because the mean of its divisors is an integer number (388006081).

Almost surely, 2^776012161 is an apocalyptic number.

It is an amenable number.

776012161 is a deficient number, since it is larger than the sum of its proper divisors (1).

776012161 is an equidigital number, since it uses as much as digits as its factorization.

776012161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 776012161 is about 27856.9948307422. The cubic root of 776012161 is about 918.9449787735.

The spelling of 776012161 in words is "seven hundred seventy-six million, twelve thousand, one hundred sixty-one".