68982109 has 8 divisors (see below), whose sum is σ = 79947648. Its totient is φ = 58294320.

The previous prime is 68982101. The next prime is 68982139. The reversal of 68982109 is 90128986.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68982109 - 2³ = 68982101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68982101) 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 7 ways as a sum of consecutive naturals, for example, 68902 + ... + 69895.

It is an arithmetic number, because the mean of its divisors is an integer number (9993456).

Almost surely, 2^68982109 is an apocalyptic number.

It is an amenable number.

68982109 is a deficient number, since it is larger than the sum of its proper divisors (10965539).

68982109 is a wasteful number, since it uses less digits than its factorization.

68982109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138875.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 68982109 is about 8305.5468814522. The cubic root of 68982109 is about 410.1211400914.

The spelling of 68982109 in words is "sixty-eight million, nine hundred eighty-two thousand, one hundred nine".