68390853 has 32 divisors (see below), whose sum is σ = 96614400. Its totient is φ = 42996096.

The previous prime is 68390843. The next prime is 68390857. The reversal of 68390853 is 35809386.

It is not a de Polignac number, because 68390853 - 2⁶ = 68390789 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68390857) 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 31 ways as a sum of consecutive naturals, for example, 865668 + ... + 865746.

It is an arithmetic number, because the mean of its divisors is an integer number (3019200).

Almost surely, 2^68390853 is an apocalyptic number.

It is an amenable number.

68390853 is a deficient number, since it is larger than the sum of its proper divisors (28223547).

68390853 is a wasteful number, since it uses less digits than its factorization.

68390853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 68390853 is about 8269.8762384935. The cubic root of 68390853 is about 408.9460397525.

The spelling of 68390853 in words is "sixty-eight million, three hundred ninety thousand, eight hundred fifty-three".