65784361 has 2 divisors, whose sum is σ = 65784362. Its totient is φ = 65784360.

The previous prime is 65784359. The next prime is 65784371. The reversal of 65784361 is 16348756.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64641600 + 1142761 = 8040^2 + 1069^2 .

It is a cyclic number.

It is not a de Polignac number, because 65784361 - 2¹ = 65784359 is a prime.

Together with 65784359, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65784311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32892180 + 32892181.

It is an arithmetic number, because the mean of its divisors is an integer number (32892181).

Almost surely, 2^65784361 is an apocalyptic number.

It is an amenable number.

65784361 is a deficient number, since it is larger than the sum of its proper divisors (1).

65784361 is an equidigital number, since it uses as much as digits as its factorization.

65784361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 40.

The square root of 65784361 is about 8110.7558833934. The cubic root of 65784361 is about 403.6833961198.

The spelling of 65784361 in words is "sixty-five million, seven hundred eighty-four thousand, three hundred sixty-one".