6465650689 has 2 divisors, whose sum is σ = 6465650690. Its totient is φ = 6465650688.

The previous prime is 6465650651. The next prime is 6465650707. The reversal of 6465650689 is 9860565646.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4294836225 + 2170814464 = 65535^2 + 46592^2 .

It is a cyclic number.

It is not a de Polignac number, because 6465650689 - 2⁷ = 6465650561 is a prime.

It is not a weakly prime, because it can be changed into another prime (6465650189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3232825344 + 3232825345.

It is an arithmetic number, because the mean of its divisors is an integer number (3232825345).

It is a Proth number, since it is equal to 49329 ⋅ 2¹⁷ + 1 and 49329 < 2¹⁷.

Almost surely, 2^6465650689 is an apocalyptic number.

It is an amenable number.

6465650689 is a deficient number, since it is larger than the sum of its proper divisors (1).

6465650689 is an equidigital number, since it uses as much as digits as its factorization.

6465650689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9331200, while the sum is 55.

The square root of 6465650689 is about 80409.2699195808. The cubic root of 6465650689 is about 1862.9623555164.

The spelling of 6465650689 in words is "six billion, four hundred sixty-five million, six hundred fifty thousand, six hundred eighty-nine".