65604213 has 12 divisors (see below), whose sum is σ = 96097248. Its totient is φ = 43119720.

The previous prime is 65604193. The next prime is 65604221. The reversal of 65604213 is 31240656.

65604213 is a `hidden beast` number, since 656 + 0 + 4 + 2 + 1 + 3 = 666.

It is not a de Polignac number, because 65604213 - 2¹⁰ = 65603189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65604013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50695 + ... + 51972.

It is an arithmetic number, because the mean of its divisors is an integer number (8008104).

Almost surely, 2^65604213 is an apocalyptic number.

It is an amenable number.

65604213 is a deficient number, since it is larger than the sum of its proper divisors (30493035).

65604213 is a wasteful number, since it uses less digits than its factorization.

65604213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102744 (or 102741 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 65604213 is about 8099.6427699004. The cubic root of 65604213 is about 403.3145686388.

Adding to 65604213 its reverse (31240656), we get a palindrome (96844869).

The spelling of 65604213 in words is "sixty-five million, six hundred four thousand, two hundred thirteen".