65604042 has 36 divisors (see below), whose sum is σ = 165351186. Its totient is φ = 18743760.

The previous prime is 65604041. The next prime is 65604043. The reversal of 65604042 is 24040656.

It is a happy number.

65604042 is a `hidden beast` number, since 656 + 0 + 4 + 0 + 4 + 2 = 666.

65604042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (65604041) and next prime (65604043).

It can be written as a sum of positive squares in only one way, i.e., 56836521 + 8767521 = 7539^2 + 2961^2 .

It is a junction number, because it is equal to n+sod(n) for n = 65603997 and 65604015.

It is not an unprimeable number, because it can be changed into a prime (65604041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 36309 + ... + 38072.

Almost surely, 2^65604042 is an apocalyptic number.

65604042 is an abundant number, since it is smaller than the sum of its proper divisors (99747144).

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

65604042 is a wasteful number, since it uses less digits than its factorization.

65604042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74403 (or 74393 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 65604042 is about 8099.6322138724. The cubic root of 65604042 is about 403.3142182200.

Adding to 65604042 its reverse (24040656), we get a palindrome (89644698).

The spelling of 65604042 in words is "sixty-five million, six hundred four thousand, forty-two".