68003389 has 2 divisors, whose sum is σ = 68003390. Its totient is φ = 68003388.

The previous prime is 68003371. The next prime is 68003393. The reversal of 68003389 is 98330086.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36699364 + 31304025 = 6058^2 + 5595^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68003389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68003189) 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, 34001694 + 34001695.

It is an arithmetic number, because the mean of its divisors is an integer number (34001695).

Almost surely, 2^68003389 is an apocalyptic number.

It is an amenable number.

68003389 is a deficient number, since it is larger than the sum of its proper divisors (1).

68003389 is an equidigital number, since it uses as much as digits as its factorization.

68003389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 68003389 is about 8246.4167369834. The cubic root of 68003389 is about 408.1722908287.

The spelling of 68003389 in words is "sixty-eight million, three thousand, three hundred eighty-nine".