65706305 has 12 divisors (see below), whose sum is σ = 91720980. Its totient is φ = 45055584.

The previous prime is 65706287. The next prime is 65706307. The reversal of 65706305 is 50360756.

65706305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 49392784 + 16313521 = 7028^2 + 4039^2 .

It is not a de Polignac number, because 65706305 - 2⁸ = 65706049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65706307) 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 in 11 ways as a sum of consecutive naturals, for example, 133850 + ... + 134339.

It is an arithmetic number, because the mean of its divisors is an integer number (7643415).

Almost surely, 2^65706305 is an apocalyptic number.

It is an amenable number.

65706305 is a deficient number, since it is larger than the sum of its proper divisors (26014675).

65706305 is a wasteful number, since it uses less digits than its factorization.

65706305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268208 (or 268201 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 32.

The square root of 65706305 is about 8105.9425731990. The cubic root of 65706305 is about 403.5236703048.

The spelling of 65706305 in words is "sixty-five million, seven hundred six thousand, three hundred five".