77369 has 2 divisors, whose sum is σ = 77370. Its totient is φ = 77368.

The previous prime is 77359. The next prime is 77377. The reversal of 77369 is 96377.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42025 + 35344 = 205^2 + 188^2 .

It is an emirp because it is prime and its reverse (96377) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77369 - 2¹⁶ = 11833 is a prime.

It is a super-2 number, since 2×77369² = 11971924322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38684 + 38685.

It is an arithmetic number, because the mean of its divisors is an integer number (38685).

2⁷⁷³⁶⁹ is an apocalyptic number.

It is an amenable number.

77369 is a deficient number, since it is larger than the sum of its proper divisors (1).

77369 is an equidigital number, since it uses as much as digits as its factorization.

77369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7938, while the sum is 32.

The square root of 77369 is about 278.1528356857. The cubic root of 77369 is about 42.6110590140.

The spelling of 77369 in words is "seventy-seven thousand, three hundred sixty-nine".