68449369 has 2 divisors, whose sum is σ = 68449370. Its totient is φ = 68449368.

The previous prime is 68449351. The next prime is 68449373. The reversal of 68449369 is 96394486.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59521225 + 8928144 = 7715^2 + 2988^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68449369 is a prime.

It is a super-2 number, since 2×68449369² = 9370632232996322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (68449349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34224684 + 34224685.

It is an arithmetic number, because the mean of its divisors is an integer number (34224685).

Almost surely, 2^68449369 is an apocalyptic number.

It is an amenable number.

68449369 is a deficient number, since it is larger than the sum of its proper divisors (1).

68449369 is an equidigital number, since it uses as much as digits as its factorization.

68449369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1119744, while the sum is 49.

The square root of 68449369 is about 8273.4133826372. The cubic root of 68449369 is about 409.0626394816.

The spelling of 68449369 in words is "sixty-eight million, four hundred forty-nine thousand, three hundred sixty-nine".