65407073 has 2 divisors, whose sum is σ = 65407074. Its totient is φ = 65407072.

The previous prime is 65407057. The next prime is 65407091. The reversal of 65407073 is 37070456.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64754209 + 652864 = 8047^2 + 808^2 .

It is a cyclic number.

It is not a de Polignac number, because 65407073 - 2⁴ = 65407057 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (65407273) 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, 32703536 + 32703537.

It is an arithmetic number, because the mean of its divisors is an integer number (32703537).

Almost surely, 2^65407073 is an apocalyptic number.

It is an amenable number.

65407073 is a deficient number, since it is larger than the sum of its proper divisors (1).

65407073 is an equidigital number, since it uses as much as digits as its factorization.

65407073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 65407073 is about 8087.4639411870. The cubic root of 65407073 is about 402.9101778976.

The spelling of 65407073 in words is "sixty-five million, four hundred seven thousand, seventy-three".