68559497 has 2 divisors, whose sum is σ = 68559498. Its totient is φ = 68559496.

The previous prime is 68559479. The next prime is 68559499. The reversal of 68559497 is 79495586.

Together with previous prime (68559479) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43349056 + 25210441 = 6584^2 + 5021^2 .

It is a cyclic number.

It is not a de Polignac number, because 68559497 - 2⁶ = 68559433 is a prime.

Together with 68559499, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68559499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34279748 + 34279749.

It is an arithmetic number, because the mean of its divisors is an integer number (34279749).

Almost surely, 2^68559497 is an apocalyptic number.

It is an amenable number.

68559497 is a deficient number, since it is larger than the sum of its proper divisors (1).

68559497 is an equidigital number, since it uses as much as digits as its factorization.

68559497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2721600, while the sum is 53.

The square root of 68559497 is about 8280.0662436964. The cubic root of 68559497 is about 409.2819018489.

The spelling of 68559497 in words is "sixty-eight million, five hundred fifty-nine thousand, four hundred ninety-seven".