65663783 has 2 divisors, whose sum is σ = 65663784. Its totient is φ = 65663782.

The previous prime is 65663779. The next prime is 65663813. The reversal of 65663783 is 38736656.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65663783 - 2² = 65663779 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65662783) 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, 32831891 + 32831892.

It is an arithmetic number, because the mean of its divisors is an integer number (32831892).

Almost surely, 2^65663783 is an apocalyptic number.

65663783 is a deficient number, since it is larger than the sum of its proper divisors (1).

65663783 is an equidigital number, since it uses as much as digits as its factorization.

65663783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 44.

The square root of 65663783 is about 8103.3192581806. The cubic root of 65663783 is about 403.4366044022.

The spelling of 65663783 in words is "sixty-five million, six hundred sixty-three thousand, seven hundred eighty-three".