65212013 has 2 divisors, whose sum is σ = 65212014. Its totient is φ = 65212012.

The previous prime is 65212001. The next prime is 65212031. The reversal of 65212013 is 31021256.

Together with next prime (65212031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34597924 + 30614089 = 5882^2 + 5533^2 .

It is a cyclic number.

It is not a de Polignac number, because 65212013 - 2²⁴ = 48434797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65215013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32606006 + 32606007.

It is an arithmetic number, because the mean of its divisors is an integer number (32606007).

Almost surely, 2^65212013 is an apocalyptic number.

It is an amenable number.

65212013 is a deficient number, since it is larger than the sum of its proper divisors (1).

65212013 is an equidigital number, since it uses as much as digits as its factorization.

65212013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 65212013 is about 8075.3955321086. The cubic root of 65212013 is about 402.5092532883.

Adding to 65212013 its reverse (31021256), we get a palindrome (96233269).

The spelling of 65212013 in words is "sixty-five million, two hundred twelve thousand, thirteen".