68839563 has 16 divisors (see below), whose sum is σ = 99008000. Its totient is φ = 42293664.

The previous prime is 68839559. The next prime is 68839567. The reversal of 68839563 is 36593886.

It is an interprime number because it is at equal distance from previous prime (68839559) and next prime (68839567).

It is not a de Polignac number, because 68839563 - 2² = 68839559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68839567) 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 in 15 ways as a sum of consecutive naturals, for example, 33438 + ... + 35436.

It is an arithmetic number, because the mean of its divisors is an integer number (6188000).

Almost surely, 2^68839563 is an apocalyptic number.

68839563 is a deficient number, since it is larger than the sum of its proper divisors (30168437).

68839563 is a wasteful number, since it uses less digits than its factorization.

68839563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2898.

The product of its digits is 933120, while the sum is 48.

The square root of 68839563 is about 8296.9610701750. The cubic root of 68839563 is about 409.8384511276.

The spelling of 68839563 in words is "sixty-eight million, eight hundred thirty-nine thousand, five hundred sixty-three".