65445013 has 4 divisors (see below), whose sum is σ = 65551360. Its totient is φ = 65338668.

The previous prime is 65445007. The next prime is 65445043. The reversal of 65445013 is 31054456.

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 not a de Polignac number, because 65445013 - 2⁹ = 65444501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65445043) 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, 52245 + ... + 53482.

It is an arithmetic number, because the mean of its divisors is an integer number (16387840).

Almost surely, 2^65445013 is an apocalyptic number.

It is an amenable number.

65445013 is a deficient number, since it is larger than the sum of its proper divisors (106347).

65445013 is a wasteful number, since it uses less digits than its factorization.

65445013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106346.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 65445013 is about 8089.8092066501. The cubic root of 65445013 is about 402.9880668104.

Adding to 65445013 its reverse (31054456), we get a palindrome (96499469).

The spelling of 65445013 in words is "sixty-five million, four hundred forty-five thousand, thirteen".