68719549 has 2 divisors, whose sum is σ = 68719550. Its totient is φ = 68719548.

The previous prime is 68719537. The next prime is 68719583. The reversal of 68719549 is 94591786.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58415449 + 10304100 = 7643^2 + 3210^2 .

It is a cyclic number.

It is not a de Polignac number, because 68719549 - 2⁹ = 68719037 is a prime.

It is a super-3 number, since 3×68719549³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68717549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34359774 + 34359775.

It is an arithmetic number, because the mean of its divisors is an integer number (34359775).

Almost surely, 2^68719549 is an apocalyptic number.

It is an amenable number.

68719549 is a deficient number, since it is larger than the sum of its proper divisors (1).

68719549 is an equidigital number, since it uses as much as digits as its factorization.

68719549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 49.

The square root of 68719549 is about 8289.7255081215. The cubic root of 68719549 is about 409.6001435756.

The spelling of 68719549 in words is "sixty-eight million, seven hundred nineteen thousand, five hundred forty-nine".