65696663 has 2 divisors, whose sum is σ = 65696664. Its totient is φ = 65696662.

The previous prime is 65696639. The next prime is 65696669. The reversal of 65696663 is 36669656.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65696663 - 2¹⁰ = 65695639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65696669) 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, 32848331 + 32848332.

It is an arithmetic number, because the mean of its divisors is an integer number (32848332).

Almost surely, 2^65696663 is an apocalyptic number.

65696663 is a deficient number, since it is larger than the sum of its proper divisors (1).

65696663 is an equidigital number, since it uses as much as digits as its factorization.

65696663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1049760, while the sum is 47.

The square root of 65696663 is about 8105.3478025314. The cubic root of 65696663 is about 403.5039311258.

The spelling of 65696663 in words is "sixty-five million, six hundred ninety-six thousand, six hundred sixty-three".