68356543 has 4 divisors (see below), whose sum is σ = 69293008. Its totient is φ = 67420080.

The previous prime is 68356531. The next prime is 68356573. The reversal of 68356543 is 34565386.

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 68356543 - 2⁵ = 68356511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68356496 and 68356505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68356523) 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, 468123 + ... + 468268.

It is an arithmetic number, because the mean of its divisors is an integer number (17323252).

Almost surely, 2^68356543 is an apocalyptic number.

68356543 is a deficient number, since it is larger than the sum of its proper divisors (936465).

68356543 is an equidigital number, since it uses as much as digits as its factorization.

68356543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936464.

The product of its digits is 259200, while the sum is 40.

The square root of 68356543 is about 8267.8015820410. The cubic root of 68356543 is about 408.8776422744.

The spelling of 68356543 in words is "sixty-eight million, three hundred fifty-six thousand, five hundred forty-three".