68809863 has 32 divisors (see below), whose sum is σ = 101855232. Its totient is φ = 41126400.

The previous prime is 68809841. The next prime is 68809877. The reversal of 68809863 is 36890886.

It is not a de Polignac number, because 68809863 - 2⁶ = 68809799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68809883) 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 in 31 ways as a sum of consecutive naturals, for example, 111945 + ... + 112557.

It is an arithmetic number, because the mean of its divisors is an integer number (3182976).

Almost surely, 2^68809863 is an apocalyptic number.

68809863 is a deficient number, since it is larger than the sum of its proper divisors (33045369).

68809863 is a wasteful number, since it uses less digits than its factorization.

68809863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735.

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 68809863 is about 8295.1710651439. The cubic root of 68809863 is about 409.7795026954.

The spelling of 68809863 in words is "sixty-eight million, eight hundred nine thousand, eight hundred sixty-three".