68058989 has 2 divisors, whose sum is σ = 68058990. Its totient is φ = 68058988.

The previous prime is 68058937. The next prime is 68059009. The reversal of 68058989 is 98985086.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54612100 + 13446889 = 7390^2 + 3667^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68058989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68058989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68058689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34029494 + 34029495.

It is an arithmetic number, because the mean of its divisors is an integer number (34029495).

Almost surely, 2^68058989 is an apocalyptic number.

It is an amenable number.

68058989 is a deficient number, since it is larger than the sum of its proper divisors (1).

68058989 is an equidigital number, since it uses as much as digits as its factorization.

68058989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1244160, while the sum is 53.

The square root of 68058989 is about 8249.7872093770. The cubic root of 68058989 is about 408.2835019388.

The spelling of 68058989 in words is "sixty-eight million, fifty-eight thousand, nine hundred eighty-nine".