65318009 has 2 divisors, whose sum is σ = 65318010. Its totient is φ = 65318008.

The previous prime is 65317979. The next prime is 65318017. The reversal of 65318009 is 90081356.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64722025 + 595984 = 8045^2 + 772^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65318009 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65318039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32659004 + 32659005.

It is an arithmetic number, because the mean of its divisors is an integer number (32659005).

Almost surely, 2^65318009 is an apocalyptic number.

It is an amenable number.

65318009 is a deficient number, since it is larger than the sum of its proper divisors (1).

65318009 is an equidigital number, since it uses as much as digits as its factorization.

65318009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 65318009 is about 8081.9557657785. The cubic root of 65318009 is about 402.7272155627.

The spelling of 65318009 in words is "sixty-five million, three hundred eighteen thousand, nine".