80734543 has 4 divisors (see below), whose sum is σ = 80755720. Its totient is φ = 80713368.

The previous prime is 80734501. The next prime is 80734561. The reversal of 80734543 is 34543708.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80734543 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80734499 and 80734508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80734573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3108 + ... + 13081.

It is an arithmetic number, because the mean of its divisors is an integer number (20188930).

Almost surely, 2^80734543 is an apocalyptic number.

80734543 is a deficient number, since it is larger than the sum of its proper divisors (21177).

80734543 is a wasteful number, since it uses less digits than its factorization.

80734543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21176.

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 80734543 is about 8985.2402861582. The cubic root of 80734543 is about 432.2016930127.

The spelling of 80734543 in words is "eighty million, seven hundred thirty-four thousand, five hundred forty-three".