68405823 has 8 divisors (see below), whose sum is σ = 101342000. Its totient is φ = 45603864.

The previous prime is 68405801. The next prime is 68405851. The reversal of 68405823 is 32850486.

It is not a de Polignac number, because 68405823 - 2⁵ = 68405791 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 (68405023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1266748 + ... + 1266801.

It is an arithmetic number, because the mean of its divisors is an integer number (12667750).

Almost surely, 2^68405823 is an apocalyptic number.

68405823 is a deficient number, since it is larger than the sum of its proper divisors (32936177).

68405823 is a wasteful number, since it uses less digits than its factorization.

68405823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2533558 (or 2533552 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 68405823 is about 8270.7812811124. The cubic root of 68405823 is about 408.9758754947.

The spelling of 68405823 in words is "sixty-eight million, four hundred five thousand, eight hundred twenty-three".