65611242 has 64 divisors (see below), whose sum is σ = 150163200. Its totient is φ = 21228480.

The previous prime is 65611213. The next prime is 65611243. The reversal of 65611242 is 24211656.

65611242 is a `hidden beast` number, since 6 + 5 + 611 + 2 + 42 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (65611243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 417828 + ... + 417984.

It is an arithmetic number, because the mean of its divisors is an integer number (2346300).

Almost surely, 2^65611242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65611242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75081600).

65611242 is an abundant number, since it is smaller than the sum of its proper divisors (84551958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65611242 is a wasteful number, since it uses less digits than its factorization.

65611242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348 (or 342 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 65611242 is about 8100.0766663038. The cubic root of 65611242 is about 403.3289721694.

Adding to 65611242 its reverse (24211656), we get a palindrome (89822898).

The spelling of 65611242 in words is "sixty-five million, six hundred eleven thousand, two hundred forty-two".