68263511 has 2 divisors, whose sum is σ = 68263512. Its totient is φ = 68263510.

The previous prime is 68263469. The next prime is 68263513. The reversal of 68263511 is 11536286.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68263511 is a prime.

It is a Sophie Germain prime.

Together with 68263513, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68263513) 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, 34131755 + 34131756.

It is an arithmetic number, because the mean of its divisors is an integer number (34131756).

Almost surely, 2^68263511 is an apocalyptic number.

68263511 is a deficient number, since it is larger than the sum of its proper divisors (1).

68263511 is an equidigital number, since it uses as much as digits as its factorization.

68263511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 32.

The square root of 68263511 is about 8262.1735033828. The cubic root of 68263511 is about 408.6920664057.

Adding to 68263511 its reverse (11536286), we get a palindrome (79799797).

The spelling of 68263511 in words is "sixty-eight million, two hundred sixty-three thousand, five hundred eleven".