65013533 has 8 divisors (see below), whose sum is σ = 70635768. Its totient is φ = 59480064.

The previous prime is 65013523. The next prime is 65013569. The reversal of 65013533 is 33531056.

It can be written as a sum of positive squares in 4 ways, for example, as 1444804 + 63568729 = 1202^2 + 7973^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65013533 - 2¹⁶ = 64947997 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 (65013523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20660 + ... + 23597.

It is an arithmetic number, because the mean of its divisors is an integer number (8829471).

Almost surely, 2^65013533 is an apocalyptic number.

It is an amenable number.

65013533 is a deficient number, since it is larger than the sum of its proper divisors (5622235).

65013533 is a wasteful number, since it uses less digits than its factorization.

65013533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44383.

The product of its (nonzero) digits is 4050, while the sum is 26.

The square root of 65013533 is about 8063.0969856501. The cubic root of 65013533 is about 402.1004777594.

Adding to 65013533 its reverse (33531056), we get a palindrome (98544589).

The spelling of 65013533 in words is "sixty-five million, thirteen thousand, five hundred thirty-three".