65806057 has 2 divisors, whose sum is σ = 65806058. Its totient is φ = 65806056.

The previous prime is 65806051. The next prime is 65806067. The reversal of 65806057 is 75060856.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65755881 + 50176 = 8109^2 + 224^2 .

It is a cyclic number.

It is not a de Polignac number, because 65806057 - 2³ = 65806049 is a prime.

It is not a weakly prime, because it can be changed into another prime (65806051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32903028 + 32903029.

It is an arithmetic number, because the mean of its divisors is an integer number (32903029).

Almost surely, 2^65806057 is an apocalyptic number.

It is an amenable number.

65806057 is a deficient number, since it is larger than the sum of its proper divisors (1).

65806057 is an equidigital number, since it uses as much as digits as its factorization.

65806057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 65806057 is about 8112.0932563673. The cubic root of 65806057 is about 403.7277701532.

The spelling of 65806057 in words is "sixty-five million, eight hundred six thousand, fifty-seven".