68888863 has 2 divisors, whose sum is σ = 68888864. Its totient is φ = 68888862.

The previous prime is 68888861. The next prime is 68888867. The reversal of 68888863 is 36888886.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68888863 - 2¹ = 68888861 is a prime.

Together with 68888861, 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 (68888861) 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, 34444431 + 34444432.

It is an arithmetic number, because the mean of its divisors is an integer number (34444432).

Almost surely, 2^68888863 is an apocalyptic number.

68888863 is the 4437-th centered heptagonal number.

68888863 is a deficient number, since it is larger than the sum of its proper divisors (1).

68888863 is an equidigital number, since it uses as much as digits as its factorization.

68888863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3538944, while the sum is 55.

The square root of 68888863 is about 8299.9315057415. The cubic root of 68888863 is about 409.9362641358.

It can be divided in two parts, 68888 and 863, that added together give a triangular number (69751 = T₃₇₃).

The spelling of 68888863 in words is "sixty-eight million, eight hundred eighty-eight thousand, eight hundred sixty-three".