75779 has 6 divisors (see below), whose sum is σ = 83676. Its totient is φ = 68060.

The previous prime is 75773. The next prime is 75781. The reversal of 75779 is 97757.

It is not a de Polignac number, because 75779 - 2¹⁶ = 10243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 872 + ... + 954.

It is an arithmetic number, because the mean of its divisors is an integer number (13946).

2⁷⁵⁷⁷⁹ is an apocalyptic number.

75779 is a deficient number, since it is larger than the sum of its proper divisors (7897).

75779 is an equidigital number, since it uses as much as digits as its factorization.

75779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177 (or 94 counting only the distinct ones).

The product of its digits is 15435, while the sum is 35.

The square root of 75779 is about 275.2798575995. The cubic root of 75779 is about 42.3171382172.

The spelling of 75779 in words is "seventy-five thousand, seven hundred seventy-nine".