65635213 has 4 divisors (see below), whose sum is σ = 75011680. Its totient is φ = 56258748.

The previous prime is 65635211. The next prime is 65635217. The reversal of 65635213 is 31253656.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 65635213 - 2¹ = 65635211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65635211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4688223 + ... + 4688236.

It is an arithmetic number, because the mean of its divisors is an integer number (18752920).

Almost surely, 2^65635213 is an apocalyptic number.

It is an amenable number.

65635213 is a deficient number, since it is larger than the sum of its proper divisors (9376467).

65635213 is an equidigital number, since it uses as much as digits as its factorization.

65635213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9376466.

The product of its digits is 16200, while the sum is 31.

The square root of 65635213 is about 8101.5562085318. The cubic root of 65635213 is about 403.3780847976.

Adding to 65635213 its reverse (31253656), we get a palindrome (96888869).

The spelling of 65635213 in words is "sixty-five million, six hundred thirty-five thousand, two hundred thirteen".