68108213 has 2 divisors, whose sum is σ = 68108214. Its totient is φ = 68108212.

The previous prime is 68108207. The next prime is 68108263. The reversal of 68108213 is 31280186.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49463089 + 18645124 = 7033^2 + 4318^2 .

It is a cyclic number.

It is not a de Polignac number, because 68108213 - 2²⁰ = 67059637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68108203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34054106 + 34054107.

It is an arithmetic number, because the mean of its divisors is an integer number (34054107).

Almost surely, 2^68108213 is an apocalyptic number.

It is an amenable number.

68108213 is a deficient number, since it is larger than the sum of its proper divisors (1).

68108213 is an equidigital number, since it uses as much as digits as its factorization.

68108213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 68108213 is about 8252.7700198176. The cubic root of 68108213 is about 408.3819092380.

Adding to 68108213 its reverse (31280186), we get a palindrome (99388399).

The spelling of 68108213 in words is "sixty-eight million, one hundred eight thousand, two hundred thirteen".