68244889 has 2 divisors, whose sum is σ = 68244890. Its totient is φ = 68244888.

The previous prime is 68244871. The next prime is 68244899. The reversal of 68244889 is 98844286.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65076489 + 3168400 = 8067^2 + 1780^2 .

It is a cyclic number.

It is not a de Polignac number, because 68244889 - 2¹¹ = 68242841 is a prime.

It is not a weakly prime, because it can be changed into another prime (68244829) 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, 34122444 + 34122445.

It is an arithmetic number, because the mean of its divisors is an integer number (34122445).

Almost surely, 2^68244889 is an apocalyptic number.

It is an amenable number.

68244889 is a deficient number, since it is larger than the sum of its proper divisors (1).

68244889 is an equidigital number, since it uses as much as digits as its factorization.

68244889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 884736, while the sum is 49.

The square root of 68244889 is about 8261.0464833458. The cubic root of 68244889 is about 408.6548998644.

The spelling of 68244889 in words is "sixty-eight million, two hundred forty-four thousand, eight hundred eighty-nine".