65305513 has 16 divisors (see below), whose sum is σ = 82091520. Its totient is φ = 50567616.

The previous prime is 65305501. The next prime is 65305523. The reversal of 65305513 is 31550356.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 65305513 - 2¹³ = 65297321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65305523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3358 + ... + 11911.

It is an arithmetic number, because the mean of its divisors is an integer number (5130720).

Almost surely, 2^65305513 is an apocalyptic number.

It is an amenable number.

65305513 is a deficient number, since it is larger than the sum of its proper divisors (16786007).

65305513 is a wasteful number, since it uses less digits than its factorization.

65305513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15336.

The product of its (nonzero) digits is 6750, while the sum is 28.

The square root of 65305513 is about 8081.1826485979. The cubic root of 65305513 is about 402.7015319862.

Adding to 65305513 its reverse (31550356), we get a palindrome (96855869).

The spelling of 65305513 in words is "sixty-five million, three hundred five thousand, five hundred thirteen".