68843923 has 4 divisors (see below), whose sum is σ = 69525648. Its totient is φ = 68162200.

The previous prime is 68843921. The next prime is 68843953. The reversal of 68843923 is 32934886.

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

It is a cyclic number.

It is not a de Polignac number, because 68843923 - 2¹ = 68843921 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68843923.

It is not an unprimeable number, because it can be changed into a prime (68843921) 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 3 ways as a sum of consecutive naturals, for example, 340711 + ... + 340912.

It is an arithmetic number, because the mean of its divisors is an integer number (17381412).

Almost surely, 2^68843923 is an apocalyptic number.

68843923 is a deficient number, since it is larger than the sum of its proper divisors (681725).

68843923 is a wasteful number, since it uses less digits than its factorization.

68843923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681724.

The product of its digits is 248832, while the sum is 43.

The square root of 68843923 is about 8297.2238128184. The cubic root of 68843923 is about 409.8471034095.

The spelling of 68843923 in words is "sixty-eight million, eight hundred forty-three thousand, nine hundred twenty-three".