65137613 has 4 divisors (see below), whose sum is σ = 65175168. Its totient is φ = 65100060.

The previous prime is 65137577. The next prime is 65137619. The reversal of 65137613 is 31673156.

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 65137613 - 2¹² = 65133517 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 65137613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65137619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16043 + ... + 19688.

It is an arithmetic number, because the mean of its divisors is an integer number (16293792).

Almost surely, 2^65137613 is an apocalyptic number.

It is an amenable number.

65137613 is a deficient number, since it is larger than the sum of its proper divisors (37555).

65137613 is a wasteful number, since it uses less digits than its factorization.

65137613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37554.

The product of its digits is 11340, while the sum is 32.

The square root of 65137613 is about 8070.7876319477. The cubic root of 65137613 is about 402.3561215622.

The spelling of 65137613 in words is "sixty-five million, one hundred thirty-seven thousand, six hundred thirteen".