65678377 has 2 divisors, whose sum is σ = 65678378. Its totient is φ = 65678376.

The previous prime is 65678323. The next prime is 65678401. The reversal of 65678377 is 77387656.

65678377 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37258816 + 28419561 = 6104^2 + 5331^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65678377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65678377.

It is not a weakly prime, because it can be changed into another prime (65678477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32839188 + 32839189.

It is an arithmetic number, because the mean of its divisors is an integer number (32839189).

Almost surely, 2^65678377 is an apocalyptic number.

It is an amenable number.

65678377 is a deficient number, since it is larger than the sum of its proper divisors (1).

65678377 is an equidigital number, since it uses as much as digits as its factorization.

65678377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1481760, while the sum is 49.

The square root of 65678377 is about 8104.2197033397. The cubic root of 65678377 is about 403.4664905759.

The spelling of 65678377 in words is "sixty-five million, six hundred seventy-eight thousand, three hundred seventy-seven".