77315369 has 2 divisors, whose sum is σ = 77315370. Its totient is φ = 77315368.

The previous prime is 77315347. The next prime is 77315449. The reversal of 77315369 is 96351377.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67043344 + 10272025 = 8188^2 + 3205^2 .

It is an emirp because it is prime and its reverse (96351377) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77315369 - 2²⁰ = 76266793 is a prime.

It is a super-2 number, since 2×77315369² = 11955332567212322, which contains 22 as substring.

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 (77315339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38657684 + 38657685.

It is an arithmetic number, because the mean of its divisors is an integer number (38657685).

Almost surely, 2^77315369 is an apocalyptic number.

It is an amenable number.

77315369 is a deficient number, since it is larger than the sum of its proper divisors (1).

77315369 is an equidigital number, since it uses as much as digits as its factorization.

77315369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 119070, while the sum is 41.

The square root of 77315369 is about 8792.9158417444. The cubic root of 77315369 is about 426.0121096134.

The spelling of 77315369 in words is "seventy-seven million, three hundred fifteen thousand, three hundred sixty-nine".