68608213 has 2 divisors, whose sum is σ = 68608214. Its totient is φ = 68608212.

The previous prime is 68608159. The next prime is 68608271. The reversal of 68608213 is 31280686.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53100369 + 15507844 = 7287^2 + 3938^2 .

It is a cyclic number.

It is not a de Polignac number, because 68608213 - 2⁹ = 68607701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68608283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34304106 + 34304107.

It is an arithmetic number, because the mean of its divisors is an integer number (34304107).

Almost surely, 2^68608213 is an apocalyptic number.

It is an amenable number.

68608213 is a deficient number, since it is larger than the sum of its proper divisors (1).

68608213 is an equidigital number, since it uses as much as digits as its factorization.

68608213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 68608213 is about 8283.0074852073. The cubic root of 68608213 is about 409.3788194038.

Adding to 68608213 its reverse (31280686), we get a palindrome (99888899).

The spelling of 68608213 in words is "sixty-eight million, six hundred eight thousand, two hundred thirteen".