72967543 has 16 divisors (see below), whose sum is σ = 84585600. Its totient is φ = 62246880.

The previous prime is 72967511. The next prime is 72967549. The reversal of 72967543 is 34576927.

It is a cyclic number.

It is not a de Polignac number, because 72967543 - 2⁵ = 72967511 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72967543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72967549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21180 + ... + 24382.

It is an arithmetic number, because the mean of its divisors is an integer number (5286600).

Almost surely, 2^72967543 is an apocalyptic number.

72967543 is a deficient number, since it is larger than the sum of its proper divisors (11618057).

72967543 is a wasteful number, since it uses less digits than its factorization.

72967543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3342.

The product of its digits is 317520, while the sum is 43.

The square root of 72967543 is about 8542.1041318869. The cubic root of 72967543 is about 417.8719703591.

The spelling of 72967543 in words is "seventy-two million, nine hundred sixty-seven thousand, five hundred forty-three".