65443663 has 2 divisors, whose sum is σ = 65443664. Its totient is φ = 65443662.

The previous prime is 65443621. The next prime is 65443673. The reversal of 65443663 is 36634456.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65443663 - 2¹⁷ = 65312591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65443603) 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, 32721831 + 32721832.

It is an arithmetic number, because the mean of its divisors is an integer number (32721832).

Almost surely, 2^65443663 is an apocalyptic number.

65443663 is a deficient number, since it is larger than the sum of its proper divisors (1).

65443663 is an equidigital number, since it uses as much as digits as its factorization.

65443663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 37.

The square root of 65443663 is about 8089.7257679108. The cubic root of 65443663 is about 402.9852958449.

The spelling of 65443663 in words is "sixty-five million, four hundred forty-three thousand, six hundred sixty-three".