68843971 has 6 divisors (see below), whose sum is σ = 80083860. Its totient is φ = 59009076.

The previous prime is 68843959. The next prime is 68843977. The reversal of 68843971 is 17934886.

It is a happy number.

It is not a de Polignac number, because 68843971 - 2⁷ = 68843843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68843977) 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 5 ways as a sum of consecutive naturals, for example, 702441 + ... + 702538.

It is an arithmetic number, because the mean of its divisors is an integer number (13347310).

Almost surely, 2^68843971 is an apocalyptic number.

68843971 is a deficient number, since it is larger than the sum of its proper divisors (11239889).

68843971 is a wasteful number, since it uses less digits than its factorization.

68843971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404993 (or 1404986 counting only the distinct ones).

The product of its digits is 290304, while the sum is 46.

The square root of 68843971 is about 8297.2267053516. The cubic root of 68843971 is about 409.8471986620.

The spelling of 68843971 in words is "sixty-eight million, eight hundred forty-three thousand, nine hundred seventy-one".