65011613 has 4 divisors (see below), whose sum is σ = 65035200. Its totient is φ = 64988028.

The previous prime is 65011607. The next prime is 65011663. The reversal of 65011613 is 31611056.

It is a happy number.

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 65011613 - 2⁸ = 65011357 is a prime.

It is a super-3 number, since 3×65011613³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65011663) 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, 7013 + ... + 13386.

It is an arithmetic number, because the mean of its divisors is an integer number (16258800).

Almost surely, 2^65011613 is an apocalyptic number.

It is an amenable number.

65011613 is a deficient number, since it is larger than the sum of its proper divisors (23587).

65011613 is a wasteful number, since it uses less digits than its factorization.

65011613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23586.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 65011613 is about 8062.9779238195. The cubic root of 65011613 is about 402.0965194014.

Adding to 65011613 its reverse (31611056), we get a palindrome (96622669).

The spelling of 65011613 in words is "sixty-five million, eleven thousand, six hundred thirteen".