65563669 has 2 divisors, whose sum is σ = 65563670. Its totient is φ = 65563668.

The previous prime is 65563657. The next prime is 65563681. The reversal of 65563669 is 96636556.

65563669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (65563657) and next prime (65563681).

It can be written as a sum of positive squares in only one way, i.e., 48860100 + 16703569 = 6990^2 + 4087^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65563669 is a prime.

It is a super-2 number, since 2×65563669² = 8597189385483122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65563649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32781834 + 32781835.

It is an arithmetic number, because the mean of its divisors is an integer number (32781835).

Almost surely, 2^65563669 is an apocalyptic number.

It is an amenable number.

65563669 is a deficient number, since it is larger than the sum of its proper divisors (1).

65563669 is an equidigital number, since it uses as much as digits as its factorization.

65563669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 874800, while the sum is 46.

The square root of 65563669 is about 8097.1395566583. The cubic root of 65563669 is about 403.2314674941.

The spelling of 65563669 in words is "sixty-five million, five hundred sixty-three thousand, six hundred sixty-nine".