68986843 has 4 divisors (see below), whose sum is σ = 69019920. Its totient is φ = 68953768.

The previous prime is 68986831. The next prime is 68986847. The reversal of 68986843 is 34868986.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68986843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68986847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13183 + ... + 17656.

It is an arithmetic number, because the mean of its divisors is an integer number (17254980).

Almost surely, 2^68986843 is an apocalyptic number.

68986843 is a deficient number, since it is larger than the sum of its proper divisors (33077).

68986843 is a wasteful number, since it uses less digits than its factorization.

68986843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33076.

The product of its digits is 1990656, while the sum is 52.

The square root of 68986843 is about 8305.8318668271. The cubic root of 68986843 is about 410.1305216015.

The spelling of 68986843 in words is "sixty-eight million, nine hundred eighty-six thousand, eight hundred forty-three".