320768543 has 8 divisors (see below), whose sum is σ = 329159040. Its totient is φ = 312405120.

The previous prime is 320768533. The next prime is 320768573. The reversal of 320768543 is 345867023.

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

It is a cyclic number.

It is not a de Polignac number, because 320768543 - 2⁴ = 320768527 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320768497 and 320768506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320768533) 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, 18443 + ... + 31331.

It is an arithmetic number, because the mean of its divisors is an integer number (41144880).

Almost surely, 2^320768543 is an apocalyptic number.

320768543 is a deficient number, since it is larger than the sum of its proper divisors (8390497).

320768543 is a wasteful number, since it uses less digits than its factorization.

320768543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13537.

The product of its (nonzero) digits is 120960, while the sum is 38.

The square root of 320768543 is about 17910.0123673882. The cubic root of 320768543 is about 684.5375200666.

The spelling of 320768543 in words is "three hundred twenty million, seven hundred sixty-eight thousand, five hundred forty-three".