68839566 has 16 divisors (see below), whose sum is σ = 138288384. Its totient is φ = 22844984.

The previous prime is 68839559. The next prime is 68839567. The reversal of 68839566 is 66593886.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 23910 + ... + 26633.

It is an arithmetic number, because the mean of its divisors is an integer number (8643024).

Almost surely, 2^68839566 is an apocalyptic number.

68839566 is an abundant number, since it is smaller than the sum of its proper divisors (69448818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68839566 is a wasteful number, since it uses less digits than its factorization.

68839566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50775.

The product of its digits is 1866240, while the sum is 51.

The square root of 68839566 is about 8296.9612509641. The cubic root of 68839566 is about 409.8384570811.

The spelling of 68839566 in words is "sixty-eight million, eight hundred thirty-nine thousand, five hundred sixty-six".