65683973 has 2 divisors, whose sum is σ = 65683974. Its totient is φ = 65683972.

The previous prime is 65683963. The next prime is 65684029. The reversal of 65683973 is 37938656.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56821444 + 8862529 = 7538^2 + 2977^2 .

It is a cyclic number.

It is not a de Polignac number, because 65683973 - 2⁶ = 65683909 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65683963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32841986 + 32841987.

It is an arithmetic number, because the mean of its divisors is an integer number (32841987).

Almost surely, 2^65683973 is an apocalyptic number.

It is an amenable number.

65683973 is a deficient number, since it is larger than the sum of its proper divisors (1).

65683973 is an equidigital number, since it uses as much as digits as its factorization.

65683973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 816480, while the sum is 47.

The square root of 65683973 is about 8104.5649482252. The cubic root of 65683973 is about 403.4779491130.

The spelling of 65683973 in words is "sixty-five million, six hundred eighty-three thousand, nine hundred seventy-three".