755616761 has 2 divisors, whose sum is σ = 755616762. Its totient is φ = 755616760.

The previous prime is 755616749. The next prime is 755616767. The reversal of 755616761 is 167616557.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 738806761 + 16810000 = 27181^2 + 4100^2 .

It is an emirp because it is prime and its reverse (167616557) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-755616761 is a prime.

It is a super-3 number, since 3×755616761³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (755616767) 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, 377808380 + 377808381.

It is an arithmetic number, because the mean of its divisors is an integer number (377808381).

Almost surely, 2^755616761 is an apocalyptic number.

It is an amenable number.

755616761 is a deficient number, since it is larger than the sum of its proper divisors (1).

755616761 is an equidigital number, since it uses as much as digits as its factorization.

755616761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 264600, while the sum is 44.

The square root of 755616761 is about 27488.4841524592. The cubic root of 755616761 is about 910.8227317715.

The spelling of 755616761 in words is "seven hundred fifty-five million, six hundred sixteen thousand, seven hundred sixty-one".