65318089 has 2 divisors, whose sum is σ = 65318090. Its totient is φ = 65318088.

The previous prime is 65318051. The next prime is 65318093. The reversal of 65318089 is 98081356.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41062464 + 24255625 = 6408^2 + 4925^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65318089 is a prime.

It is a super-2 number, since 2×65318089² = 8532905501223842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (65318009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32659044 + 32659045.

It is an arithmetic number, because the mean of its divisors is an integer number (32659045).

Almost surely, 2^65318089 is an apocalyptic number.

It is an amenable number.

65318089 is a deficient number, since it is larger than the sum of its proper divisors (1).

65318089 is an equidigital number, since it uses as much as digits as its factorization.

65318089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 65318089 is about 8081.9607150740. The cubic root of 65318089 is about 402.7273799797.

The spelling of 65318089 in words is "sixty-five million, three hundred eighteen thousand, eighty-nine".