65736513 has 6 divisors (see below), whose sum is σ = 94952754. Its totient is φ = 43824336.

The previous prime is 65736499. The next prime is 65736521. The reversal of 65736513 is 31563756.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 42146064 + 23590449 = 6492^2 + 4857^2 .

It is not a de Polignac number, because 65736513 - 2⁵ = 65736481 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65736563) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3652020 + ... + 3652037.

It is an arithmetic number, because the mean of its divisors is an integer number (15825459).

Almost surely, 2^65736513 is an apocalyptic number.

It is an amenable number.

65736513 is a deficient number, since it is larger than the sum of its proper divisors (29216241).

65736513 is a wasteful number, since it uses less digits than its factorization.

65736513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7304063 (or 7304060 counting only the distinct ones).

The product of its digits is 56700, while the sum is 36.

The square root of 65736513 is about 8107.8056834140. The cubic root of 65736513 is about 403.5854998633.

The spelling of 65736513 in words is "sixty-five million, seven hundred thirty-six thousand, five hundred thirteen".