65954393 has 2 divisors, whose sum is σ = 65954394. Its totient is φ = 65954392.

The previous prime is 65954333. The next prime is 65954417. The reversal of 65954393 is 39345956.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56731024 + 9223369 = 7532^2 + 3037^2 .

It is a cyclic number.

It is not a de Polignac number, because 65954393 - 2⁸ = 65954137 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 (65954333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32977196 + 32977197.

It is an arithmetic number, because the mean of its divisors is an integer number (32977197).

Almost surely, 2^65954393 is an apocalyptic number.

It is an amenable number.

65954393 is a deficient number, since it is larger than the sum of its proper divisors (1).

65954393 is an equidigital number, since it uses as much as digits as its factorization.

65954393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 437400, while the sum is 44.

The square root of 65954393 is about 8121.2310027483. The cubic root of 65954393 is about 404.0308953434.

The spelling of 65954393 in words is "sixty-five million, nine hundred fifty-four thousand, three hundred ninety-three".