65604340 has 24 divisors (see below), whose sum is σ = 145020960. Its totient is φ = 24860448.

The previous prime is 65604317. The next prime is 65604347. The reversal of 65604340 is 4340656.

It is a junction number, because it is equal to n+sod(n) for n = 65604299 and 65604308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65604347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85942 + ... + 86701.

It is an arithmetic number, because the mean of its divisors is an integer number (6042540).

Almost surely, 2^65604340 is an apocalyptic number.

It is an amenable number.

65604340 is an abundant number, since it is smaller than the sum of its proper divisors (79416620).

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

65604340 is a wasteful number, since it uses less digits than its factorization.

65604340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172671 (or 172669 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 65604340 is about 8099.6506097485. The cubic root of 65604340 is about 403.3148288910.

Adding to 65604340 its reverse (4340656), we get a palindrome (69944996).

The spelling of 65604340 in words is "sixty-five million, six hundred four thousand, three hundred forty".