65845013 has 16 divisors (see below), whose sum is σ = 74995200. Its totient is φ = 57309120.

The previous prime is 65845009. The next prime is 65845019. The reversal of 65845013 is 31054856.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 65845013 - 2² = 65845009 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 (65845019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65948 + ... + 66938.

It is an arithmetic number, because the mean of its divisors is an integer number (4687200).

Almost surely, 2^65845013 is an apocalyptic number.

It is an amenable number.

65845013 is a deficient number, since it is larger than the sum of its proper divisors (9150187).

65845013 is a wasteful number, since it uses less digits than its factorization.

65845013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 65845013 is about 8114.4940076384. The cubic root of 65845013 is about 403.8074209597.

Adding to 65845013 its reverse (31054856), we get a palindrome (96899869).

The spelling of 65845013 in words is "sixty-five million, eight hundred forty-five thousand, thirteen".