68388659 has 2 divisors, whose sum is σ = 68388660. Its totient is φ = 68388658.

The previous prime is 68388647. The next prime is 68388689. The reversal of 68388659 is 95688386.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68388659 - 2²⁰ = 67340083 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68388659.

It is not a weakly prime, because it can be changed into another prime (68388689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34194329 + 34194330.

It is an arithmetic number, because the mean of its divisors is an integer number (34194330).

Almost surely, 2^68388659 is an apocalyptic number.

68388659 is a deficient number, since it is larger than the sum of its proper divisors (1).

68388659 is an equidigital number, since it uses as much as digits as its factorization.

68388659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2488320, while the sum is 53.

The square root of 68388659 is about 8269.7435873188. The cubic root of 68388659 is about 408.9416666666.

The spelling of 68388659 in words is "sixty-eight million, three hundred eighty-eight thousand, six hundred fifty-nine".