68240503 has 2 divisors, whose sum is σ = 68240504. Its totient is φ = 68240502.

The previous prime is 68240479. The next prime is 68240507. The reversal of 68240503 is 30504286.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68240503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68240507) 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, 34120251 + 34120252.

It is an arithmetic number, because the mean of its divisors is an integer number (34120252).

Almost surely, 2^68240503 is an apocalyptic number.

68240503 is a deficient number, since it is larger than the sum of its proper divisors (1).

68240503 is an equidigital number, since it uses as much as digits as its factorization.

68240503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 68240503 is about 8260.7810163446. The cubic root of 68240503 is about 408.6461451243.

Adding to 68240503 its reverse (30504286), we get a palindrome (98744789).

The spelling of 68240503 in words is "sixty-eight million, two hundred forty thousand, five hundred three".