65606013 has 24 divisors (see below), whose sum is σ = 106718976. Its totient is φ = 38476800.

The previous prime is 65606011. The next prime is 65606029. The reversal of 65606013 is 31060656.

65606013 is a `hidden beast` number, since 6 + 56 + 0 + 601 + 3 = 666.

It is not a de Polignac number, because 65606013 - 2¹ = 65606011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65606011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7620 + ... + 13757.

It is an arithmetic number, because the mean of its divisors is an integer number (4446624).

Almost surely, 2^65606013 is an apocalyptic number.

It is an amenable number.

65606013 is a deficient number, since it is larger than the sum of its proper divisors (41112963).

65606013 is a wasteful number, since it uses less digits than its factorization.

65606013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21425 (or 21422 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 65606013 is about 8099.7538851498. The cubic root of 65606013 is about 403.3182572209.

Adding to 65606013 its reverse (31060656), we get a palindrome (96666669).

The spelling of 65606013 in words is "sixty-five million, six hundred six thousand, thirteen".