65664383 has 2 divisors, whose sum is σ = 65664384. Its totient is φ = 65664382.

The previous prime is 65664341. The next prime is 65664409. The reversal of 65664383 is 38346656.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65664383 - 2⁸ = 65664127 is a prime.

It is a super-2 number, since 2×65664383² = 8623622389541378, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65664383.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65664283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32832191 + 32832192.

It is an arithmetic number, because the mean of its divisors is an integer number (32832192).

Almost surely, 2^65664383 is an apocalyptic number.

65664383 is a deficient number, since it is larger than the sum of its proper divisors (1).

65664383 is an equidigital number, since it uses as much as digits as its factorization.

65664383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 41.

The square root of 65664383 is about 8103.3562799620. The cubic root of 65664383 is about 403.4378331934.

The spelling of 65664383 in words is "sixty-five million, six hundred sixty-four thousand, three hundred eighty-three".