65006647 has 2 divisors, whose sum is σ = 65006648. Its totient is φ = 65006646.

The previous prime is 65006621. The next prime is 65006701. The reversal of 65006647 is 74660056.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65006647 - 2¹⁵ = 64973879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65006047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32503323 + 32503324.

It is an arithmetic number, because the mean of its divisors is an integer number (32503324).

Almost surely, 2^65006647 is an apocalyptic number.

65006647 is a deficient number, since it is larger than the sum of its proper divisors (1).

65006647 is an equidigital number, since it uses as much as digits as its factorization.

65006647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 65006647 is about 8062.6699672007. The cubic root of 65006647 is about 402.0862809118.

The spelling of 65006647 in words is "sixty-five million, six thousand, six hundred forty-seven".