68838529 has 2 divisors, whose sum is σ = 68838530. Its totient is φ = 68838528.

The previous prime is 68838509. The next prime is 68838533. The reversal of 68838529 is 92583886.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67568400 + 1270129 = 8220^2 + 1127^2 .

It is a cyclic number.

It is not a de Polignac number, because 68838529 - 2⁹ = 68838017 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68838509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34419264 + 34419265.

It is an arithmetic number, because the mean of its divisors is an integer number (34419265).

Almost surely, 2^68838529 is an apocalyptic number.

It is an amenable number.

68838529 is a deficient number, since it is larger than the sum of its proper divisors (1).

68838529 is an equidigital number, since it uses as much as digits as its factorization.

68838529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 829440, while the sum is 49.

The square root of 68838529 is about 8296.8987579698. The cubic root of 68838529 is about 409.8363991337.

The spelling of 68838529 in words is "sixty-eight million, eight hundred thirty-eight thousand, five hundred twenty-nine".