68947543 has 8 divisors (see below), whose sum is σ = 80474112. Its totient is φ = 57840216.

The previous prime is 68947531. The next prime is 68947559. The reversal of 68947543 is 34574986.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68947543 - 2⁵ = 68947511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68947493 and 68947502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68944543) 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, 104455 + ... + 105112.

It is an arithmetic number, because the mean of its divisors is an integer number (10059264).

Almost surely, 2^68947543 is an apocalyptic number.

68947543 is a deficient number, since it is larger than the sum of its proper divisors (11526569).

68947543 is a wasteful number, since it uses less digits than its factorization.

68947543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209621.

The product of its digits is 725760, while the sum is 46.

The square root of 68947543 is about 8303.4657222150. The cubic root of 68947543 is about 410.0526265979.

The spelling of 68947543 in words is "sixty-eight million, nine hundred forty-seven thousand, five hundred forty-three".