68758889 has 2 divisors, whose sum is σ = 68758890. Its totient is φ = 68758888.

The previous prime is 68758883. The next prime is 68758903. The reversal of 68758889 is 98885786.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45333289 + 23425600 = 6733^2 + 4840^2 .

It is a cyclic number.

It is not a de Polignac number, because 68758889 - 2⁴ = 68758873 is a prime.

It is not a weakly prime, because it can be changed into another prime (68758883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34379444 + 34379445.

It is an arithmetic number, because the mean of its divisors is an integer number (34379445).

Almost surely, 2^68758889 is an apocalyptic number.

It is an amenable number.

68758889 is a deficient number, since it is larger than the sum of its proper divisors (1).

68758889 is an equidigital number, since it uses as much as digits as its factorization.

68758889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7741440, while the sum is 59.

The square root of 68758889 is about 8292.0979854317. The cubic root of 68758889 is about 409.6782901680.

The spelling of 68758889 in words is "sixty-eight million, seven hundred fifty-eight thousand, eight hundred eighty-nine".