65775793 has 2 divisors, whose sum is σ = 65775794. Its totient is φ = 65775792.

The previous prime is 65775781. The next prime is 65775803. The reversal of 65775793 is 39757756.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59861169 + 5914624 = 7737^2 + 2432^2 .

It is a cyclic number.

It is not a de Polignac number, because 65775793 - 2¹³ = 65767601 is a prime.

It is not a weakly prime, because it can be changed into another prime (65775763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32887896 + 32887897.

It is an arithmetic number, because the mean of its divisors is an integer number (32887897).

Almost surely, 2^65775793 is an apocalyptic number.

It is an amenable number.

65775793 is a deficient number, since it is larger than the sum of its proper divisors (1).

65775793 is an equidigital number, since it uses as much as digits as its factorization.

65775793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1389150, while the sum is 49.

The square root of 65775793 is about 8110.2276786783. The cubic root of 65775793 is about 403.6658696162.

The spelling of 65775793 in words is "sixty-five million, seven hundred seventy-five thousand, seven hundred ninety-three".