68233213 has 2 divisors, whose sum is σ = 68233214. Its totient is φ = 68233212.

The previous prime is 68233211. The next prime is 68233219. The reversal of 68233213 is 31233286.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36457444 + 31775769 = 6038^2 + 5637^2 .

It is a cyclic number.

It is not a de Polignac number, because 68233213 - 2¹ = 68233211 is a prime.

Together with 68233211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68233211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34116606 + 34116607.

It is an arithmetic number, because the mean of its divisors is an integer number (34116607).

Almost surely, 2^68233213 is an apocalyptic number.

It is an amenable number.

68233213 is a deficient number, since it is larger than the sum of its proper divisors (1).

68233213 is an equidigital number, since it uses as much as digits as its factorization.

68233213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 28.

The square root of 68233213 is about 8260.3397629880. The cubic root of 68233213 is about 408.6315929822.

Adding to 68233213 its reverse (31233286), we get a palindrome (99466499).

The spelling of 68233213 in words is "sixty-eight million, two hundred thirty-three thousand, two hundred thirteen".