68045863 has 2 divisors, whose sum is σ = 68045864. Its totient is φ = 68045862.

The previous prime is 68045843. The next prime is 68045893. The reversal of 68045863 is 36854086.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68045863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68045843) 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, 34022931 + 34022932.

It is an arithmetic number, because the mean of its divisors is an integer number (34022932).

Almost surely, 2^68045863 is an apocalyptic number.

68045863 is a deficient number, since it is larger than the sum of its proper divisors (1).

68045863 is an equidigital number, since it uses as much as digits as its factorization.

68045863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 68045863 is about 8248.9916353455. The cubic root of 68045863 is about 408.2572527792.

The spelling of 68045863 in words is "sixty-eight million, forty-five thousand, eight hundred sixty-three".