65516117 has 2 divisors, whose sum is σ = 65516118. Its totient is φ = 65516116.

The previous prime is 65516111. The next prime is 65516141. The reversal of 65516117 is 71161556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42915601 + 22600516 = 6551^2 + 4754^2 .

It is a cyclic number.

It is not a de Polignac number, because 65516117 - 2⁶ = 65516053 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65516111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32758058 + 32758059.

It is an arithmetic number, because the mean of its divisors is an integer number (32758059).

Almost surely, 2^65516117 is an apocalyptic number.

It is an amenable number.

65516117 is a deficient number, since it is larger than the sum of its proper divisors (1).

65516117 is an equidigital number, since it uses as much as digits as its factorization.

65516117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6300, while the sum is 32.

The square root of 65516117 is about 8094.2026784607. The cubic root of 65516117 is about 403.1339587136.

The spelling of 65516117 in words is "sixty-five million, five hundred sixteen thousand, one hundred seventeen".