65954939 has 2 divisors, whose sum is σ = 65954940. Its totient is φ = 65954938.

The previous prime is 65954929. The next prime is 65954971. The reversal of 65954939 is 93945956.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65954939 - 2⁴ = 65954923 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65954929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32977469 + 32977470.

It is an arithmetic number, because the mean of its divisors is an integer number (32977470).

Almost surely, 2^65954939 is an apocalyptic number.

65954939 is a deficient number, since it is larger than the sum of its proper divisors (1).

65954939 is an equidigital number, since it uses as much as digits as its factorization.

65954939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1312200, while the sum is 50.

The square root of 65954939 is about 8121.2646182722. The cubic root of 65954939 is about 404.0320102565.

The spelling of 65954939 in words is "sixty-five million, nine hundred fifty-four thousand, nine hundred thirty-nine".