68206013 has 2 divisors, whose sum is σ = 68206014. Its totient is φ = 68206012.

The previous prime is 68206003. The next prime is 68206027. The reversal of 68206013 is 31060286.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68194564 + 11449 = 8258^2 + 107^2 .

It is a cyclic number.

It is not a de Polignac number, because 68206013 - 2¹⁰ = 68204989 is a prime.

It is a super-3 number, since 3×68206013³ (a number of 24 digits) contains 333 as substring.

It is a Chen prime.

It is equal to p_4018724 and since 68206013 and 4018724 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68206003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34103006 + 34103007.

It is an arithmetic number, because the mean of its divisors is an integer number (34103007).

Almost surely, 2^68206013 is an apocalyptic number.

It is an amenable number.

68206013 is a deficient number, since it is larger than the sum of its proper divisors (1).

68206013 is an equidigital number, since it uses as much as digits as its factorization.

68206013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 68206013 is about 8258.6931774949. The cubic root of 68206013 is about 408.5772877738.

Adding to 68206013 its reverse (31060286), we get a palindrome (99266299).

The spelling of 68206013 in words is "sixty-eight million, two hundred six thousand, thirteen".