766769 has 2 divisors, whose sum is σ = 766770. Its totient is φ = 766768.

The previous prime is 766763. The next prime is 766793. The reversal of 766769 is 967667.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 616225 + 150544 = 785^2 + 388^2 .

It is an emirp because it is prime and its reverse (967667) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-766769 is a prime.

It is a super-2 number, since 2×766769² = 1175869398722, which contains 22 as substring.

It is a Chen prime.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (766763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383384 + 383385.

It is an arithmetic number, because the mean of its divisors is an integer number (383385).

2⁷⁶⁶⁷⁶⁹ is an apocalyptic number.

It is an amenable number.

766769 is a deficient number, since it is larger than the sum of its proper divisors (1).

766769 is an equidigital number, since it uses as much as digits as its factorization.

766769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 95256, while the sum is 41.

The square root of 766769 is about 875.6534702723. The cubic root of 766769 is about 91.5281846545.

The spelling of 766769 in words is "seven hundred sixty-six thousand, seven hundred sixty-nine".