68558849 has 2 divisors, whose sum is σ = 68558850. Its totient is φ = 68558848.

The previous prime is 68558801. The next prime is 68558851. The reversal of 68558849 is 94885586.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47334400 + 21224449 = 6880^2 + 4607^2 .

It is a cyclic number.

It is not a de Polignac number, because 68558849 - 2²⁰ = 67510273 is a prime.

Together with 68558851, it forms a pair of twin primes.

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 68558849.

It is not a weakly prime, because it can be changed into another prime (68558879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34279424 + 34279425.

It is an arithmetic number, because the mean of its divisors is an integer number (34279425).

Almost surely, 2^68558849 is an apocalyptic number.

It is an amenable number.

68558849 is a deficient number, since it is larger than the sum of its proper divisors (1).

68558849 is an equidigital number, since it uses as much as digits as its factorization.

68558849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2764800, while the sum is 53.

The square root of 68558849 is about 8280.0271134822. The cubic root of 68558849 is about 409.2806123825.

The spelling of 68558849 in words is "sixty-eight million, five hundred fifty-eight thousand, eight hundred forty-nine".