68561263 has 2 divisors, whose sum is σ = 68561264. Its totient is φ = 68561262.

The previous prime is 68561261. The next prime is 68561279. The reversal of 68561263 is 36216586.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68561263 - 2¹ = 68561261 is a prime.

Together with 68561261, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68561261) 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, 34280631 + 34280632.

It is an arithmetic number, because the mean of its divisors is an integer number (34280632).

Almost surely, 2^68561263 is an apocalyptic number.

68561263 is a deficient number, since it is larger than the sum of its proper divisors (1).

68561263 is an equidigital number, since it uses as much as digits as its factorization.

68561263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 37.

The square root of 68561263 is about 8280.1728846685. The cubic root of 68561263 is about 409.2854160016.

The spelling of 68561263 in words is "sixty-eight million, five hundred sixty-one thousand, two hundred sixty-three".