65287513 has 4 divisors (see below), whose sum is σ = 65312208. Its totient is φ = 65262820.

The previous prime is 65287493. The next prime is 65287529. The reversal of 65287513 is 31578256.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65287513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65287543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7831 + ... + 13852.

It is an arithmetic number, because the mean of its divisors is an integer number (16328052).

Almost surely, 2^65287513 is an apocalyptic number.

It is an amenable number.

65287513 is a deficient number, since it is larger than the sum of its proper divisors (24695).

65287513 is a wasteful number, since it uses less digits than its factorization.

65287513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24694.

The product of its digits is 50400, while the sum is 37.

The square root of 65287513 is about 8080.0688734688. The cubic root of 65287513 is about 402.6645300379.

It can be divided in two parts, 6528 and 7513, that added together give a palindrome (14041).

The spelling of 65287513 in words is "sixty-five million, two hundred eighty-seven thousand, five hundred thirteen".