68368519 has 2 divisors, whose sum is σ = 68368520. Its totient is φ = 68368518.

The previous prime is 68368499. The next prime is 68368523. The reversal of 68368519 is 91586386.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68368519 is a prime.

It is a super-2 number, since 2×68368519² = 9348508780506722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68368549) 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, 34184259 + 34184260.

It is an arithmetic number, because the mean of its divisors is an integer number (34184260).

Almost surely, 2^68368519 is an apocalyptic number.

68368519 is a deficient number, since it is larger than the sum of its proper divisors (1).

68368519 is an equidigital number, since it uses as much as digits as its factorization.

68368519 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 46.

The square root of 68368519 is about 8268.5258057286. The cubic root of 68368519 is about 408.9015192021.

The spelling of 68368519 in words is "sixty-eight million, three hundred sixty-eight thousand, five hundred nineteen".