65899417 has 2 divisors, whose sum is σ = 65899418. Its totient is φ = 65899416.

The previous prime is 65899409. The next prime is 65899451. The reversal of 65899417 is 71499856.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62473216 + 3426201 = 7904^2 + 1851^2 .

It is a cyclic number.

It is not a de Polignac number, because 65899417 - 2³ = 65899409 is a prime.

It is not a weakly prime, because it can be changed into another prime (65899517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32949708 + 32949709.

It is an arithmetic number, because the mean of its divisors is an integer number (32949709).

Almost surely, 2^65899417 is an apocalyptic number.

It is an amenable number.

65899417 is a deficient number, since it is larger than the sum of its proper divisors (1).

65899417 is an equidigital number, since it uses as much as digits as its factorization.

65899417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 49.

The square root of 65899417 is about 8117.8455885783. The cubic root of 65899417 is about 403.9186047340.

The spelling of 65899417 in words is "sixty-five million, eight hundred ninety-nine thousand, four hundred seventeen".