68269493 has 2 divisors, whose sum is σ = 68269494. Its totient is φ = 68269492.

The previous prime is 68269457. The next prime is 68269511. The reversal of 68269493 is 39496286.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67782289 + 487204 = 8233^2 + 698^2 .

It is a cyclic number.

It is not a de Polignac number, because 68269493 - 2¹² = 68265397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68269693) 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, 34134746 + 34134747.

It is an arithmetic number, because the mean of its divisors is an integer number (34134747).

Almost surely, 2^68269493 is an apocalyptic number.

It is an amenable number.

68269493 is a deficient number, since it is larger than the sum of its proper divisors (1).

68269493 is an equidigital number, since it uses as much as digits as its factorization.

68269493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 47.

The square root of 68269493 is about 8262.5355067316. The cubic root of 68269493 is about 408.7040040891.

The spelling of 68269493 in words is "sixty-eight million, two hundred sixty-nine thousand, four hundred ninety-three".