767296161 has 12 divisors (see below), whose sum is σ = 1108963492. Its totient is φ = 511232256.

The previous prime is 767296157. The next prime is 767296163. The reversal of 767296161 is 161692767.

It is a happy number.

767296161 is a `hidden beast` number, since 7 + 6 + 7 + 29 + 616 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 646735761 + 120560400 = 25431^2 + 10980^2 .

It is not a de Polignac number, because 767296161 - 2² = 767296157 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (767296163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7996 + ... + 39981.

Almost surely, 2^767296161 is an apocalyptic number.

767296161 is the 15993-rd octagonal number.

It is an amenable number.

767296161 is a deficient number, since it is larger than the sum of its proper divisors (341667331).

767296161 is a wasteful number, since it uses less digits than its factorization.

767296161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49760 (or 49757 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 767296161 is about 27700.1112091630. Note that the first 3 decimals coincide. The cubic root of 767296161 is about 915.4915534936.

The spelling of 767296161 in words is "seven hundred sixty-seven million, two hundred ninety-six thousand, one hundred sixty-one".